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Dynojet at Michigan International Speedway

The Dynojet Research mobile dynamometer was instrumental in catching illegal activity after the Nationwide race at MIS. The 20 and 18 cars owned by Joe Gibbs Racing and driven by Tony Stewart and Joey Logano respectively were found to have magnets placed on the throttle stops. These magnets restricted the gas pedal from opening the carburetor completely.

As a result, peak horse power would not be achieved on the Dynojet. The loss of throttle movement lowered the horse power by about eight hp. The HP during the race was not effected as the magnets were placed after the race and before the dyno test. Both team crew chiefs were fined $50,000.00 and JGR was penalized 150 owner points.

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