Bully Dog 46500 ECM Tuner Heavy Duty GT (Gauge Tuner)

ECM Tuner Caterpillar Cummins Detroit Paccar Heavy Duty GT (Gauge Tuner)

The Heavy Duty Gauge Tuner incorporates Bully Dog's SAE tested and emissions tested diesel engine tuning for both power and economy.

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