PDI Overhauled my 2005 Peterbilt 379 in 2007. It was nearly impossible to keep it under 215 degrees until they worked on it. It went from a truck you wondered if it would even get you home, to the nicest piece of equipment I’ve ever owned. I ran that truck from Mesquite, NV to Stockton, CA twice a week. The motor ran flawlessly, never went over 205 degrees even coming through Baker, CA when it was 117 degrees outside. I averaged 6.5 mpg and got as high as 7.2 mpg. That is quite impressive considering how aerodynamically challenged the truck was. They have since come a long way with their technology and have designed everything it takes to make a new truck run as it should. (Not like it does!) They have worked on my ISX Cummins motors with the same result. The next project for them are a couple of my DD15s. If you want a treat, visit their shop. It is always spotless and if you are like me, that will give you a lot of confidence having them work on your truck.
- Chris Jonsen, Far West Freighters, Inc., Saint George, UT

I had heard about the stage one tune on the Acert Cat so I did some research on it and decided to take it to PDI. When you walk in the door, everybody there is glad to see you and everything is very clean and in order. I had them install the stage 1 tune on my 2007 Acert and I am here to tell you what a difference! My mileage went from 5.2 to a steady 5.8 pulling a 40 ft end dump. I have taken my T-800 with the cat 6NZ and had it done and the fuel mileage went from 5.5 to a steady 6 MPG. Jerad does his truck show and dyno days and feeds everybody and takes the time to answer any questions you may have. PDI has one hell of a truck show, and to watch the trucks on the dyno is simply amazing. I am sold with these guys. Thank you!
- Owner of Dirt at Jerry & Son Trucking, Kanab, UT