Mack performance and fuel economy tuning.

At Heavy Diesel Tuner we offer ECU tuning/Plug in modules for most Mack engines. Our ECU tunes have a variety of features to offer, from increased fuel mileage and power gains to performance applications. This service requires removing the ECU and mailing it to our location,  usual turn-around time is 1 day depending on our work load.

Our goal is to keep your down time to a minimum!

Our plug in units provide select able power increases which allow you to fine tune the right amount of power to maximize HP/TQ and fuel mileage gains. We use only the highest quality OEM weather proof connectors and BUILT IN THE U.S.A. quality construction for maximum reliability!

If you have any questions about installing our products please contact us by email.