Autocal V3 is now available!

About Us

At All In Truck Performance, we specialize in Duramax Diesel and Allison Transmissions. We offer tuning for all Duramax platforms. We use our experience and knowledge of all Duramax Diesel platforms to advise customers on the proper services and upgrades needed to achieve their individual desired results. We have built relationships with many of the industry’s leading manufacturers as well as other Duramax Diesel experts to stay on the front-line and remain competitive in our field. Our idea of a great job is having a customer leave with no unresolved issues and a truck that meets or exceeds their expectations.