Ford. Dodge. Chevy.

Diesel repair, maintenance, and performance in Richland since 1998. One stop for everything your truck needs, from oil changes to engine rebuilds and dyno tuning.
- Hours
- Monday to Friday, 8 AM to 5 PM
1990 Saint St, Richland - Service area
- Richland, Kennewick, and Pasco, WA
- Se habla español.
- Spanish-speaking staff available.
What we do
- Turbos
- Injectors
- Injection pumps
- Exhaust
- Rebuilds
- EFI tuning
- Dynojet chassis dyno
Diesel repair
We work on every generation of the big three diesel pickups. We also service VW TDI, Isuzu, and Mercedes Sprinter diesels.
Ford
Powerstroke
- 7.3L1994½ – 2003
- 6.0L2003 – 2007
- 6.4L2008 – 2010
- 6.7L2011 – today
Dodge & Ram
Cummins
- 5.9L 12-valve1989 – 1998
- 5.9L 24-valve1998½ – 2002
- 5.9L common rail2003 – 2007
- 6.7L2007½ – today
Chevy & GMC
Duramax
- LB72001 – 2004
- LLY2004½ – 2005
- LBZ2006 – 2007
- LMM2007½ – 2010
- LML2011 – 2016
- L5P2017 – today



Performance and tuning
We do custom Chevy tuning and performance work on cars, from classics to modern models. We also tune diesels for more power and better fuel mileage, and we prove the results on our Dynojet chassis dyno.
- LS engine tuning
- Holley Terminator X EFI
- Diesel tuners and programmers
- Dynojet chassis dyno
“I completely recommend this shop found out that not only do they work on diesels they also can tune the Holley Terminator x I took my car there today and Jessie did a great job got it running great for me thank you very much”
“Want more HP?? And fuel mileage or just tune that LS motor or oil burner??? See Scott, Chad and Jessie...... they can work wonders on your rig.....bring cash, speed costs money, how fast do you want to go?”
Fleet accounts welcome
We keep company trucks working. Pickups, service vans, Sprinters, and dump trucks all come through our bays. Call us to set up a fleet account.
Call (509) 375-9997“I’ve been taking all of our fleet trucks to Diesel Performance for over 20 years. They are always able to diagnose whatever problem it is and have it fixed and back on the road in a timely manner. We have taken everything from a dump truck to a bobcat from a classic car to our family grocery getter to them and have always been able to deliver a quality job. I couldn’t give them a higher recommendation. Great people!”
“Jesse and his crew do a excellent job maintaining my trucks! Very trustworthy and competitive prices.”
“Great knowledgeable staff will take care of your truck at a fair price and in a reasonable amount of time.”
4.8 stars from 33 reviews
Read every review on Google“My Truck was starting to have issues as I was traveling through Richland WA. I came to Diesel Performance Unlimited as they were opening. I explained to Jesse that I was traveling for work and really needed to get to Nevada. He didn’t hesitate to offer help. And he gave me a ride to and from the campground I was parked at. He went above and beyond. I had gone to the dealership they couldn’t help me. I kept going down the list of repair shops and was told maybe in 2-3 weeks. Jesse troubleshot my problem and fixed it quickly and at a very reasonable price. Thank you for your help.”

“Jessie was and always had been awesome and responsive helping fix my old F350 Superduty 7.3 Powerstroke. Even as I was stuck on the highway. Fortunately he had the part in his inventory that was needed. Made it to elk camp and back home.”
“Jessie is extremely knowledgeable and a man of integrity. Ive used him a few times and have always walked away with a smile. Had a few unfortunate things happen to my truck but he took responsibility and fixed it all. 10/10 would recommend!”
“Great shop! Very honest and highest level of knowledge around! Have never heard one bad thing! Unlike other shops who advertise big but just decided to get into Diesel’s!”
The crew

When you call or bring your truck in, these are the people you work with.
Visit the shop
We have fixed trucks in Richland since 1998. Call ahead, or bring your truck in during business hours. If your truck will not run, have it towed to us.
- Address
- 1990 Saint St, Richland, WA 99354Directions
- Service area
- Richland, Kennewick, and Pasco, WA
- Hours
- Monday – Friday: 8 AM – 5 PM
- Saturday & Sunday: Closed
- Phone
- (509) 375-9997

