Bully Dog offers its gauge tuner for Detroit, Cummins, Caterpillar, Paccar, and Mercedes heavy-duty engines. The gauge tuner changes the electronic tuning characteristics of the engine management system in order to optimize performance and reduce fuel use.
Gauge Tuner
In addition to significant horsepower and fuel economy gains, the gauge tuner provides a set of monitoring features and diagnostic functions for enhanced driving and safety, according to the company.