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Cummins Class 8 Heavy Duty Bully Dog ECM Tuner

Bully Dog's ECM Tuner for Cummins®, is a response to fleet owners looking to tune and go. This heavy-duty tuner is streamlined to include 3 power levels, a speed limiter calibration feature and DTC Trouble Code Reader. The beauty of the ECM Tuner is in its simplicity; customers simply select the desired power level for the drive ahead, complete the install and store the tuner in their vehicle to enjoy the perks of Bully Dog tuning.

* Not legal for sale or use on pollution controlled vehicles based and registered in California.


  • 15-18% Power Increase
  • 6-12% Fuel Mileage Increase
  • Speed Limiter Adjustments
  • Diagnostic Reader

Bully Dog part number: 46511


Lame California Prop 65 Notice
Tags: Bully , Dog , Cummins , ECM , Tuner , heavy , duty , 46511