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