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unlock the power, torque, and efficiency of your








  • PDI diesel treats you like family. They take the time explaining things to you. I had no idea they could make my semi-truck diesel run that strong. If performance is on your mind—as far as I'm concerned—there's nothing like PDI diesel.

    Ralph Craig
  • Always the best service and fast! I'm very particular about my trucks, PDI is always clean and careful with my trucks.

    Ladd Brindley
  • This is the only place to take your truck for all your performance needs!

    Allen J Wurzel Sr
  • "I save 45 minutes in drive time and... $300 per month in fuel savings. It's nice to not work the truck so hard so I have a lot more longevity in the life of the motor." DD15

    Brad Triplett Triplett Bros. LLC
  • "I can say after running the truck, with the Performance Tuner, I am thoroughly impressed with the drivability and improvement. It took the truck from being lazy to fun to drive. I'm now getting 6.75 MPGs. I must say I am very happy with the product." Peterbilt 389 CM2350

    Mike McManus SKILLEX


We know your coach is not just a vehicle it’s your home, it’s your lifestyle. Having a mobile lifestyle is something that here at PDI we definitely understand. We recognize that as much as you enjoy arriving at your destination you want to enjoy the trip as well.

Your coach is an amazing piece of machinery however we understand the inefficiency and underpowered challenges these engines have stock.

Rather than simply accepting these challenges we change what you expected of your engine and give you a driving experience you actually enjoy.

Our team is dedicated to excellence in quality, service and performance by increasing horsepower so you can get to where you are going faster, increasing torque so you can pull stronger, and increasing fuel efficiency so you can get there for less.

More quality time, less seat time!

horsepower, torque, and efficiency


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PDI is raising the bar for quality service and performance parts. From the sale to installation, you can count on PDI to provide the best in customer service and technical support. PDI is dedicated to helping our customers achieve their power and efficiency goals. Please call or email us with any questions you may have.

687 North Industrial Rd.
St. George, UT 84770

Copyright © 2018 Performance Diesel Inc.

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