Power Vision FAQs
Device Overview FAQs
Power Vision Accessories FAQs
Power Vision Tune (Map) FAQs
Software Related FAQs
Target Tune Specific
Device Overview FAQs
What is the Power Vision? Back to
The Power Vision is a new flash tuning solution that can meet the needs of any Delphi
ECM equipped Fuel Injected Harley-Davidson. Whether you are just looking to improve
the performance and fuel economy of your completely stock motorcycle, or you are
running an all out drag bike the Power Vision is the most flexible and powerful
flash tuner in the world. The Power Vision uses reflash technology to change the
parameters inside the stock ECM (Engine Control Module) that affects the way the
engine will run. It can be as simple as using one of Dynojet’s pre-configured calibrations,
or you can create a custom tune using the WinPV software.
Which motorycles can I use with the Dynojet Power Vision Back to Top
The Power Vision is intended for Harley-Davidson Fuel Injected Motorcycles with
a Delphi ECM. This includes the 2001-Present Softails, 2002-Present Touring, 2002-Present
V-Rod, 2004-Present Dyna and 2007-Present Sportsters. The Power Vision offers the
latest flash tuning technology, data logging, and other industry exclusive features
for today’s high performance EFI tuning market.
The Power Vision will deliver a calibration (tune) to your Harley’s ECM that contains
the proper data for optimized performance and peak efficiency throughout the operation
range. You can mount the Power Vision on your bike and display the J1850 data (stuff
like knock, engine temp, spark advance, inlet air temp, etc) on one of many gauge
screens, and each gauge has a user configurable alarm to warm you in the event that
a parameter is nearing a potentially unsafe value. If you have a Dynojet Wide Band
2 or Auto Tune system, you can simply plug it in and add insightful wide band data
to the channel list. Power Vision also allows you to log the data in the event you’d
like to analyze this vital information after your ride is complete. You also have
the ability to check and clear ECM DTC’s (diagnostic trouble codes), and reset adaptive
No, a computer will not be needed to load one of the pre-configured calibrations,
or a copy of the original calibration into your motorcycle. You can even edit the
tune directly on the device without touching a computer. The list of available parameters
to edit directly on the Power Vision is limited, but it’s extremely handy for in-field
calibration changes. If you want to make adjustments to the calibration beyond what
can be done directly on the Power Vision, or if you are an experienced tuner looking
to maximize the effectiveness of your tunes, then you will need a computer with
Microsoft Windows operating system (XP, Vista, or 7) in order to use the WinPV tuning
application (which is included free).
How does the Power Vision connect to my computer? Back to Top
The Power Vision connects to your computer using the included, standard USB to Mini
How many motorcycles can I use the Power Vision on? Back to Top
The Power Vision will only be able to tune one motorcycle (flash it as many times
as you like). It can be connected to other motorcycles to monitor / log data, check
and clear DTC’s (diagnostic trouble codes), and reset adaptive learning.
Does it come with a mount? Back
No, as everyones’ mounting needs will be different. The Power Vision uses the AMPS
four bolt pattern, so it can be mounted using many of the mounting solutions readily
We have partnered with Techmount to ensure that you can buy the mount that fits
your needs. Please follow the banner link below to access the Techmount website.
Does the Power Vision display need to stay on the bike? Back to Top
No. You can remove the display and your bike will run with the last tune that was
sent to the ECM.
The Power Vision is weather resistant. We recommend removing the Power Vision before
washing the motorcycle.
What are the unit dimensions and weight? Back to Top
Dimensions: 2.83L X 3.97W
X .84H (click on link for visual)
Can I tune another bike with my Power Vision? Back to Top
The Power Vision, by default has the ability to tune one bike. Once it is married to a specific bike, it cannot be used to tune another bike. However, a license can be purchased allowing the Power Vision to tune another bike. There are three license options available, Unlock, Dual, and shop Tune license. See Dealer tools for more information.
I am having problems trying to flash a tune to my bike. Back to Top
Remove any aftermarket gauge, Power Commander or similar product from the bike. We have noticed a few problems flashing the ECM, on bikes with these items installed. These items can be reinstalled after flashing the ECM.
I have a PV-1, can I connect it to a bike with a 6 pin diagnostics port? Back to Top
No, but you can purchase a 6 pin Power Vision cable to make it work, part number 76950346. If you need to connect your PV-2 to a bike with a 4 pin, you would need cable 76950241.
I just bought a newly released model bike; will a Power Vision work on this bike? Back to Top
When new model bikes are released, Dynojet has to see the bike to know whether the existing Power Vision will work on that bike or not. Most likely the Power Vision will work, but there may need to be new firmware and tunes created to support this new bike. Older Power Vision units will need to be updated before they will support this new bike.
Will the Power Vision overwrite a non factory tune? Back to Top
In most cases yes; the Power Vision doesn’t care what tune is in the ECM. When the Power Vision is married to a bike, it saves a copy of whatever tune is in the ECM at that time. This tune will be saved in a hidden slot and called Original tune. If you restore Original tune with the Power Vision, it will write this tune back to the ECM.
Power Vision Accessories FAQs
How long do I need to run AutoTune? Back to Top
AutoTune needs to run long enough to gather information to make adjustments (20
minutes to 10 hours). You need to ride the bike long enough to hit all of the areas
you plan to ever ride the bike (rpm & throttle position). Once you have run the
bike awhile, you should have gathered enough data to adjust your tune. It would
be better to make multiple short rides, stopping to apply the AutoTune information;
than it would be to make one long ride. Each AutoTune session should be built on
the last session.
QuickTune is a simple way to make adjustments to the tune in your bike without using
a personal computer. In QuickTune you can make adjustments to a number of settings,
common ones are idle speed, rev limit, fuel and ignition timing. QuickTune can be
found on the Power Vision under Program Vehicle.
How many times should I run AutoTune? Back to Top
This will vary depending on how close the base tune is to your bike setup, and whether
you are using AutoTune Pro or Basic. A tune created with exactly the same components,
should only need 2-3 AutoTune sessions with Pro or Basic. A tune that was created
with only similar components would need more AutoTune sessions. AutoTune Basic will
need more sessions than Pro because the stock narrowband o2 sensors used in Basic
will only “read” a fairly small range, about 14.2 – 15.2. AFR values outside of
this range will only show as rich or lean. AutoTune Pro, using wideband o2 sensors,
will see AFR values between about 10.0 – 18.0. Therefore it takes less sessions
to make the needed adjustments.
If I want to use the Auto Tune Pro method, what do I need to buy besides the Power
Vision? Back to Top
The kits you need are technically the same as the AT-100 that's used with our popular
Power Commander, but these new Power Vision specific kits include a longer CAN cable
to connect the Auto Tune to the Power Vision, and also a Y-splitter to make power
/ communication a plug-n-play affair.
You’ll need one of these kits:
- AT-110 AUTOTUNE,HD-J1850,PWRVSN
- AT-110B AUTOTUNE,HD-J1850,PWRVSN,BUNGS
- AT-120 AUTOTUNE,HD-CAN,PWRVSN
- AT-120B AUTOTUNE,HD-CAN,PWRVSN,BUNGS
What is the difference between AutoTune Basic and Pro? Back to Top
AutoTune Basic: (Only works on bikes with factory O2 sensors) Uses the bike’s stock
narrowband o2 sensors Works well as long as the base tune is fairly close to the
bike setup Works well for completely stock or lightly modified bikes No need to
drill holes and weld o2 bungs in head pipes AutoTune Pro: Uses Dynojet’s AT module
and two wideband o2 sensors Works well with any base tune Works well for highly
modified bikes Need to have two 18mm Dynojet o2 sensors in the exhaust
Why can’t I get 12mm wideband o2 sensors for my AutoTune kit? Back to Top
Dynojet supplies industry standard Bosch 18mm wideband o2 sensors in our AutoTune
kits. 12mm wideband o2 sensors are not readily available. To use the AutoTune module,
18mm bungs need to be welded into the headpipes and the 18mm sensors need to be
inserted into these bungs. The stock 12mm o2 sensors can be left in the exhaust
pipe for use after the Autotuning is complete. Dynojet has tested a few of the 12mm
to 18mm adapters and found them to not work correctly.
Do I pay for additional software updates? Back to
No, the WinPV software will be updated automatically at no charge when you run the
update client on your computer.
AutoTune does not seem to be working, why? Back to
When running the AutoTune process, the hits screen will show the number of times that the engine had been at a given rpm/throttle position, and the Power Vision has recorded data. If you have any errors on the screen, you will not get any hits. The reason behind the errors will need to be resolved, before you will get any hits.
Can I use AutoTune Basic to adjust ignition timing? Back to
No, AutoTune Basic will not work correctly to adjust ignition timing. During the AutoTune Basic process, the tune is temporarily changed to run at fairly lean air fuel ratios (AFR). This is because you are using stock narrowband o2 sensors, which will only read fairly lean AFR ratios. Running this lean may cause engine knock, something that would not occur under normal AFR settings. AutoTune Pro uses our wideband o2 sensors, and will work correctly to adjust ignition timing.
What does the AutoTune hits screen cell colors mean? Back to
The cell will change color as the hit count increases. The number of hits is the number of samples taken at that spot. This count is for the front cylinder. The default colors are 1 - 2 = Yellow, 3 - 6 = Orange, 7+ = Red.
I have an AutoTune module from a Power Commander; can I use it with my Power Vision? Back to
Yes, the AutoTune modules are basically the same between the Power Commander and Power Vision. You would need different cables than what came with the AutoTune module for the Power Commander; you will need the ones that come with the AutoTune module for the Power Vision. These cables are available separately.
After an AutoTune session, I am prompted to Cap or Scale. What does that mean? Back to
If you are prompted to Cap or Scale after an AutoTune session, this means that AutoTune wants to increase one cell or more, in the VE tables, beyond the maximum value of 127.5. If this happens, AutoTune will prompt you to make a choice. Cap will raise that cell or cells to 127.5 and stop there. Scale will increase the engine displacement by a percentage, and then decrease all of the VE cells by that same percentage; effectively giving you the exact same amount of fuel. Then AutoTune will apply the changes it learned during the session. It is usually safe to choose Scale once or twice, and then choose Cap thereafter.
Power Vision Tune (Map) FAQs
There are three types of tunes that you can deliver to your bike: pre-configured
tunes (loaded on the device from Dynojet), custom tunes (loaded or emailed to you
by a custom tuner), or you can use a copy of your original (The tune file that is
saved to the Power Vision when married to the ECM) tune to tweak. The Power Vision
will be pre-loaded with a large selection of pre-configured calibrations for bikes
with basic upgrades (intake and exhaust), as well as tunes for bikes with modified
engines (increased displacement, cams, head work, etc). As new calibrations are
developed, they will be automatically uploaded to the Power Vision through the update
client feature of the WinPV software……Just plug in the USB cable and select “Update
Client”, choose the update, and we do the rest. The Power Vision holds up to 6 tunes
(any combination of the 3 types) for you to choose from at your convenience, and
these can be replaced as many times as you like with updated tunes.
How do I find a tune for my bike? Back to Top
Dynojet has created a number of pre-configured tunes for various bikes; but there
no way to have a perfect tune for every possible combination of aftermarket parts,
or rare bikes like CVO’s. What you want to look for when selecting a tune is similar
components. If the aftermarket components have similar airflow, a tune created for
each would be very similar. All of the tunes we have built are located on our website,
and will be on your Power Vision if the tune database is up to date. If we do not
have a tune listed that is a close match for your bike because you have aftermarket
cams, etc, then you can request a tune to be built for your setup. Just send an
email to firstname.lastname@example.org and list the bike and all of the modifications. We will
build you a tune for the components listed and email it to you.
What if there isn’t a tune for my bike? Back to Top
Dynojet works around the clock building calibrations (tunes) for different combinations.
If we don’t have a tune that a good fit for your bike; you still have options.
- 1. Find an Authorized Power Vision Tuning Center. Power Vision Tuning Centers have
been trained by Dynojet and use the latest in dynamometer technology, Air-Fuel systems,
and tuning techniques to build safe, powerful tunes.
- 2. Tune the bike yourself using the Auto Tune module.
- 3. Obtain a Power Commander Map that most closely matches your combination, and
import that map into your stock, or original calibration (only available for non-electronic
How do I import a Power Commander map? Back to Top
You can import a Power Commander map to most 2007 and older bikes, and some newer
than 2007 bikes. To import a map, first you need to download a Power Commander map
and save it someplace you can find it. Next, you want to retrieve the original tune
from the bike, and save that tune to a slot in the Power Vision. Next, connect the
Power Vision to your computer, open WinPV, and then select Get Tune. Select the
slot you saved the original tune. Now the tune is open in the WinPV software. Next,
select File, Import Power Commander Map. Find the map you saved earlier, and Open
it. The software will import the Power Commander map, and modify the Original tune
with those values. Now, just Send Tune to put that modified tune on a slot of the
Power Vision. Lastly, connect the Power Vision to the bike, and flash the ECM with
How do I adjust my tune? Back to
The best way to self modify a tune for a bike is to run AutoTune. Running AutoTune
on the Power Vision will make adjustments to the tune for your bike, in your environment.
Once the AutoTune has been run, if you are still having problem areas, you may want
to use QuickTune to make adjustments to the tune to address the problem areas. Both
AutoTune and QuickTune can be found under Program Vehicle on the Power Vision main
How do I retrieve the Original tune from my bike? Back to Top
When a Power Vision is married to a bike, a copy of the tune in the ECM is saved
in a hidden slot on the Power Vision called Original Tune. To retrieve this tune,
with the Power Vision plugged into the bike, go to Program Vehicle/Load Tune/Load
Copy/Load Copy of Original. Click Ok. Select one of the six custom slots, and save
the Original tune there. When this step completes, exit out of the menu. With the
Original tune in a custom slot, you can connect the Power Vision to your personal
computer and use WinPV to Get Tune. The tune should be named “copy of Original tune”.
Once the tune is open in WinPV, you can go to File, Save As. Give the tune a name
and click Save. The default directory is My Documents/Power Vision. The Original
Tune from the bike is now saved on your computer.
Can the Power Vision be tuned on a dynamometer? Back to Top
Yes, the Power Vision can be tuned by a professional using a dynamometer. The bike
is strapped down on a dyno, and air fuel ratio is measured in the exhaust pipes
at various rpm/loads. Fuel and ignition timing are adjusted to achieve the best
running motor. This information is saved in the ECM of the motorcycle. For a list
of Certified Power Vision Tuning Centers, click here.
I got a tune emailed to me, how do I load it? Back to Top
First you need to move the attached tune from the email, to a place on your computer
where you can find it. The desktop would be a good place. Once you have the tune
on the computer desktop, just open WinPV, and then select Open tune. Navigate to
where you saved it, and select the tune that was sent. Click Open. Now the tune
should be open in WinPV. With the Power Vision connected to the computer, click
Send Tune. At the Custom Tune Slot, select a slot to accept the tune. Click Ok.
That tune is now in the selected slot. Disconnect the Power Vision from the computer,
and connect it to the bike. Key on, run switch on, on the Power Vision menu select
Program Vehicle/ Load Tune/Custom Tunes. Highlight the custom slot the tune was
previously saved, and press Select. Continue through the remaining steps to send
the emailed tune to the ECM of the bike.
Deceleration or shift popping Back to Top
To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed.
Why are there two types of tunes listed for my bike, one with the letter “a”, and one without? Back to Top
In some years there were two different, incompatible ECM’s on the same model bike. The bike could have either style ECM. The software levels between the two are NOT compatible, and thus a tune created for one is not going to work on the other. Once the Power Vision is married to the bike, it will look at the ECM, and offer the correct type of tune in the pre-configured tune database.
How do I create digital gauge warnings? Back to Top
You can setup a low and high warning for a digital gauge, the color of that gauge can change if the value drops below the low, or goes above the high. To setup a warning in the digital gauge display, go to the gauge you want to setup. Select the warning field you want to change, type in the value you want to be the warning, and hit save. Next press the palette icon on the right. Next select a different color to use, and press save. Now, once that value is reached on that gauge, the color will change to the one selected.
My fuel economy readings are wrong, how do I fix them? Back to Top
The PV trip center uses correction fields that default to 1.000. You can type in the correct value in one of the trip fields, and let the unit calculate the right correction for your bike. For example, if you reset trip A or B, filled up with fuel, and drove a number of miles and stopped to refill. You can then enter the actual Fuel Used, save it, and the correction number will be adjusted. You can also calculate the actual fuel economy with a calculator, and type this into the Economy (mpg). The correction number will be adjusted. Once these fields are adjusted in this manner, your fuel economy readings should be correct.
Software Related FAQs
How do I make sure my Power Vision is Up-to-date? Back to Top
The Power Vision hardware has never changed; all new features and tunes are available
to every Power Vision made by running the PV Update Client. To run PV Update Client,
on your computer go to Programs/Power Vision/PV Update Client. Once you open the
PV Update Client, your computer and Power Vision items are compared to the latest
versions on our website. If the Installed version is different than the Latest version,
just select the outdated item, and click Download & Install Selected Updates. Once
all of the items are updated, your Power Vision is the same as one made today!
Does it come with the software? Back to Top
The Power-Vision does come the WinPV tuning software.
Do I pay for additional software updates? Back to Top
No, the WinPV software will be updated automatically at no charge when you run the
update client on your computer.
How can I compare two different tunes? Back to Top
There is a feature in the WinPV software to compare two different tunes. Once you have a tune open in WinPV, you can select the icon to Load Compare. This will prompt you to select a tune that is already saved on the computer; you cannot select a tune from a Power Vision. Once the compare tune is opened, the software will highlight the fields that are different between the two tunes. You can switch back and forth and see both tunes, or you can see the Delta, which is the difference between the two.
How do I update a tune to see additional fields? Back to Top
If the tune was created with an older version of firmware, updating it could expose more fields. With the Power Vision plugged into the computer, open WinPV, and open a tune. Once the tune is open, select PowerVision > Update tune using PV. The tune will be updated using the firmware version on the Power Vision.
I want to modify my current tune with WinPV software, how do I find it?
Back to Top
With the Power Vision connected to your bike, go to Program Vehicle > Load Tune > Load Copy > Load Copy of Current. Select Ok. The Power Vision will retrieve the Current Tune. Next highlight a slot to save the tune. Press Select, press Ok. A copy of the Current tune from the ECM is now saved in that slot. Next, disconnect the Power Vision from the bike, and connect it to your computer, open the WinPV software. Click Get Tune, select the same slot you saved the tune earlier. Press Ok. The Current tune from your ECM in now open in WinPV and ready to be modified. Once you are done, you can Send Tune, and select a slot on the Power Vision. Lastly, connect the Power Vision back to the bike, and flash the ECM from that slot.
How can I see the menus on the Power Vision, without the bike? Back to Top
The Power Vision has an option to see the menu items without using the bike. With the Power Vision connected to your computer, open WinPV. On the menu go to PowerVision > Diagnostic/Test Functions > Exit PC link mode. Click Yes. The Power Vision screen now looks like it would when connected to a bike.
How can I change the speedometer calibration? Back to Top
If your stock speedometer is driven from the ECM, you can adjust the speedometer calibration number in the ECM. This field is found under Gear in WinPV, or VSS in Quick Tune on the Power Vision. Changing this number up or down will affect the speedometer readings.
How can I change a table in one tune, to match a table in another tune?
Back to Top
The WinPV software has a utility to compare two tunes. If you open the tune you want to change, and then load compare the tune you want to copy from, WinPV will compare all of the tables in the tune for you. The Active File button will show you the table from the first tune. The Compare File button will show you the table in the second tune. The Delta button will show you the difference between the two tables. You can change the values in the Delta field to zero; this will change the values in the Active file to match the Compare file.
Lambda in reference to the Power Vision is a measurement of oxygen in the exhaust.
Lambda is similar to Air Fuel Ratio, but is independent of fuel type. An AFR for
pump gasoline of 14.64:1 (stoichiometric) is equivalent to lambda of 1. This is
where an engine will generally produce the best fuel economy, and produce the least
amount of harmful emissions. An AFR of 13:1 or lambda of .89 will generally produce
the most power and torque.
VE or Volumetric Efficiency is a measurement in percentage of efficiency that an
engine can move the air/fuel into and out of the cylinder at various rpm and throttle
positions (or manifold absolute pressure, MAP). This table is influenced by the
engine displacement, camshaft, head design, exhaust, and air filter. In theory a
value of 100 would equal the volume of the cylinder, but efficient design allows
values greater than this. The maximum allowed value in any cell is 127.5. To increase
fuel make the values larger, to decrease fuel make the values smaller.
How do I setup logging? Back to
On the Power Vision go to Datalog/Datalog Settings/Signals. On this screen highlight
Manual, and then press Select. On the next screen you will see the field selected
to log currently. To add more fields, press Add. On the next screen highlight the
field next to Signal. Next, select Vehicle to choose any channel from the bike ECM;
select Dynojet if you want to log data coming from an AutoTune module. On the next
screen select the field you want to log, and then press Ok, Ok. Once you have all
the fields you want to log, press Exit. When you start logging on the Gauges screen,
the channels selected will be logged.
How do I setup gauges? Back to Top
To setup live gauges to view, on the Power Vision go to Datalog/Gauges. From this
screen you can scroll thru the available gauge setups by pressing the Left or Right
arrows. Once you have a Gauge screen you like, you have to select the fields you
want to see. Just press None, on the next screen select None. On the following screen
select Vehicle to choose from ECM channels, or choose Dynojet to choose from channels
from the AutoTune module. On the next screen select the channel you want to display
on that gauge field, and then press Ok, Ok When you have selected all of the channels
you want to see, just press Exit.
What is the difference between a PV-1 and a PV-1B? Back to Top
The only difference is the color, they are functionally the same.
What’s the difference between a PV-1 and a PV-2? Back to Top
The truth is there is really only one Power Vision, but there are two different cables for different year/model bikes. The PV-1 comes with a 4 pin cable for the J1850 bikes. The PV-2 comes with a 6 pin cable for the CAN bikes.
I’m looking at buying a Power Vision from a private party, what do I look for?Back to Top
Be careful, the unit may have been married to a bike already. Unless you can get your hands on the unit, and verify the unit has not been married, consider the sellers reputation carefully. If the unit has been married, you would need to purchase an unlock license ($199.00) to be able to use the Power Vision on your bike.
I have had my bike tuned at a shop using their Power Vision; can anyone else modify this tune? Back to Top
The bike can always be reflashed by any HD dealer. As far as another Power Vision, it depends. When a shop purchases a tune license to allow them to tune a bike, the license belongs to the shop. If the shop decides to give you the tune license, this license can be used on any other Power Vision.
Why does my Power Vision lock up while riding? Back to Top
Most of the time we have seen this type of problem, it has been the cable running
to the Power Vision picking up interference from a coil or spark plug wire. Rerouting
the cable away from these items usually fixes this problem.
What is the best Air Fuel Ratio for performance? Economy? Back to Top
A naturally aspirated engine, running on pump gasoline will normally make the most
horsepower at an AFR of about 12.8 – 13.0. An AFR of about 14.6 will produce the
best fuel economy. Dynojet normally creates tunes with AFR’s of 12.8 at high load/rpm
areas; AFR’s around 14.6 at low load areas; and AFR’s between those numbers at other
How do I make the throttle go to “1 to 1” on my fly-by-wire bike? Back to Top
On the fly-by-wire bikes, the ECM controls the action of the throttle butterfly, based on the twist grip position. There are two tables in the tune that control this butterfly vs. the twist grip; Throttle Blade Control, and Throttle Blade Control Alternate. There is a third field that controls what gear these two tables are used, Throttle Table Transition Gear. The factory setting for TTTG is 3. This means the Throttle Blade Control table is used for gears 1-3, and the Alternate table is used for gears 4-6. If you change the TTTG value to 6, the bike will use the more aggressive Alternate table for every gear. If you want to make the throttle even more aggressive, change the values in Alternate table to higher values, up to the value at the top of each column.
Target Tune FAQs
Target Tune is a product that uses a control module and 2 Bosch wideband AFR / Lambda sensors. It uses the existing closed loop, adaptive fuel control strategy in your Delphi ECM, but with changes made to the calibration to allow your ECM to use the wideband sensors. In order for the system to work, you must have a calibration flashed to your bike with the various edits required to make it work. At this time only a Certified Power Vision Tuning Center, or a Dynojet technical representative can make those edits.
So my ECM is now able to use wideband o2 sensors and fix-up my tune on the fly? Back to Top
Yes, your ECM has now been transformed and is allowed to read and manage wideband O2 sensors, and more importantly, use them for closed loop control on your fuel table.
Your bike will immediately run better once the various thresholds to allow closed loop fuel control are met, things like engine temp, etc etc. It will immediately run at the target AFR or Lambda defined in your calibration’s fuel table even if your VE tables are not perfect.
Once Target Tune is installed and I have the correct version of my calibration flashed, what do I do? Back to Top
Enjoy the ride with newfound power and torque, and the satisfaction knowing you have the most sophisticated tuning solution available for Harley-Davidson motorcycles.
Can I make changes to my tune? Back to Top
Yes, all the regular tuning parameters that are exposed to you in WinPV are still available.
So if I change the values in my fuel table, my bike will actually run at those AFR or Lambda values? Back to Top
Yes. Your tuner, or Dynojet would have set up your fuel table for best results, but you can edit these values to suit your needs.
Why does Target Tune not seem to be working? Why I am getting errors on the bike after installing Target tune? Back to Top
You have to be using the newest desktop software, firmware, and tune database for Target Tune to function. Using old versions of any of these will keep Target Tune from functioning.
Can I use the Target Tune module for the AutoTune process? Back to Top
Yes, the Target Tune module will work for the AutoTune function. Be sure to select the correct mode, “Dynojet Target Tuner Wideband Kit” when starting an Autotune session.
Will Target Tune make adjustments in the tune that I can see? Back to Top
No. At this point only those users with special credentials, like Certified Power Vision Tuners, can make the necessary calibration changes to make Target Tune function. That being said, unless you have these special credentials you will not be able to “see” the calibration changes in WinPV. Once the necessary edits are made to your calibration, and the Target Tune is fitted to the bike, you are ready to go. The ECM will use the information provided by the Target Tune system to make adjustments to the short and long term trim fields in the ECM of the bike, while you ride. These fields are not found when you look at the tune in WinPV.
How can I turn off Target Tune? Back to Top
You can load a tune that doesn’t have Target Tune enabled, or you can use Quick Tune to turn off closed loop.
What is the adjustment range for Target Tune? Back to Top
Target Tune can subtract 30%, and add 40% fuel to a tune. Your tuner can adjust these values if need be.
How can I tell if Target Tune is working? Back to Top
At any given operating condition there is an AFR, or Lambda value the ECM is trying to achieve. Using the fuel table as a reference, you can simply monitor the real time AFR or Lambda on your Power Vision while riding, or create a datalog to verify. There are also other channels that can be monitored, or logged that would give you an indication that Target Tune is online and the ECM is using it accordingly.
How do I setup the channels? Back to Top
Select “Datalog” from the main menu, then “Gauges”. Select the style of gauges you’d like to work by scrolling left or right. Tap the gauge to assign a channel, and the “Set Gauge Properties” dialog will appear. Tap the field that says “None” and then choose the source and the channel you’re interested in. You’ll also need to change from “Basic Signals” to “Advanced Signals” by tapping the “Change” button.
To monitor AFR or Lambda from the Target Tune:
- Remember, with Target Tune fitted to the bike the wideband values are now part of the ECM’s internally calculated channels (Signal Soure = Vehicle). When using Autotune Pro, the wideband values are external to the ECM and simply sent via the Dynojet CAN cable to the Power Vision (Signal Source = Dynojet).
- Choose “Vehicle” from the “Select Signal Source” screen. You’ll see “WBO2 AFR Front” (and Rear), along with “WBO2 LAMBDA Front” (and Rear).
Like any “closed loop calibration”, the Closed Loop Integrator (CLI) should be active during normal riding conditions. This value should constantly swing up and down constantly, where the value of 100 is the “pivot point”. If you see a value of 103, that means the ECM had to add 3% to the respective front or rear cylinder VE table in order to achieve the target AFR or Lambda. Conversely, the value of 97 would indicate the ECM had to subtract 3% to the respective front or rear cylinder VE table in order to achieve the target AFR or Lambda. To view these channels, assign them to a gauge. You’re looking for “Front Closed Loop Integrator” and “Rear Closed Loop Integrator”.
If you have Adaptive Fuel enabled in your calibration, then you should also notice Adaptive Fuel Factor (AFF) change over time. These values will move, or change much slower than the CLI. Similar to the CLI values. If you see a value of 103, that means the ECM had to add 3% to the respective front or rear cylinder VE table in order to achieve the target AFR or Lambda. Conversely, the value of 97 would indicate the ECM had to subtract 3% to the respective front or rear cylinder VE table in order to achieve the target AFR or Lambda. To view these channels, assign them to a gauge. You’re looking for “Front Adaptive Fuel Factor” and “Rear Adaptive Fuel Factor”
Do the Adaptive Fuel Factors get committed to my calibration? Back to Top
No, however they are used by the ECM to calculate the final amount of fuel to be delivered at a certain operating condition. The AFF values are used by the ECM until you clear them via the Power Vision function “Reset Fuel Trim”. These values are effectively applied to the base VE tables in your calibration by the ECM, however they are NOT committed to the calibration itself. To properly “fix” your calibration, you would need to use the Autotune process and select the proper mode (“Dynojet Target Tuner Wideband Kit”).
How does Target Tune AutoTune process work? Back to Top
Utilizing the Target Tune AFR data and other data from the H-D OEM data bus, the Power Vision can automatically fix the deviation between the AFR or Lambda as defined in the fuel table of your calibration and the actual AFR or Lambda by adjusting the VE tables. The data is learned in real time, but processing the data and adjusting the tune is done in an "offline state" (key on/engine off). After the data is collected, the Power Vision can process the data, correct the tune, and then re-flash the corrected tune into the ECM. You’ve effectively corrected the VE tables to ensure the AFR or Lambda you ask for (in your calibration) is what you get (as measured by the wideband o2 sensors). Once you exit the Autotune mode you’ll be back to using your full-time, Target Tune closed loop calibration.
What happens if there is a problem with Target Tune? Back to Top
The OEM diagnostic system is still fully functional, and in the event there was an issue a DTC would be set. You can use the Power Vision to read the DTC like normal. If the module, sensor, or harness were to fail the ECM would transition into open loop, just like if your OEM narrowband sensor were to fail.