Bully Dog Heavy Duty ECM Tuner


Boost Your Big Rig’s Performance with the Push of a Button

If you drive a big rig diesel vehicle, you need Bully Dog’s Diesel ECM Tuner to reach its performance potential. The tuner has three preset power levels so you can maximize engine power or fuel economy, and it allows you to tune the vehicle for your current trip.


  • Increase Engine Power up to 18%
  • Improve Fuel Economy up to 12%
  • Built-In Speed Limiter Calibration
  • Reads Diagnostic Trouble Codes
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The Bully Dog ECM Tuner is built with simple, easy-to-use performance in mind. This powerful device comes preloaded with the same high performance, dyno-proven tunes as our gauge tuners, except it is designed to be stowed away after installation–simply set it and forget it. The ECM Tuner is able to read and clear diagnostic trouble codes and is equipped with fully customizable Speed Limiter adjustments. Select between 3 preloaded tunes that increase horsepower, torque, and fuel economy, giving your rig the ability to tackle any challenge along the route.

Additional information

Weight 2.8 lbs
Dimensions 14 × 12 × 6 in
Select Engine

PACCAR, Detroit, CAT, Cummins



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