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July 2024 by RJ Perez
Awesome shop!
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June 2024 by Kevin Mccarthy
I brought my 03 Cummins here for a few things and I will definitely be coming back in the future. They completed the work in a timely manner and kept me in the loop the whole way through. Highly recommend.
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June 2024 by full pull666
Having worked with several diesel performance companies in the area I will say this is by far the most customer oriented and attentive companies. They prioritize your needs and help you achieve your goals in anyway they can.
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December 2023 by Steven Johnson
Nice people who know their trucks. Fair price with the bill itemized well.
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January 2023 by Ian Bubble
John, Timmy, and the rest of the crew do excellent work on cars, trucks, and everything with an engine! From mild to wild, they can get you headed in the right direction!
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October 2022 by Luke
Awesome people, 10/10 customer service, & the lowest quote I could get in MA. Highly recommend this place to anyone!
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July 2022 by Ed Stanton
JT was awesome. Really took care of me. Couldn't be happier, down to earth fair pricing. I will absolutely recommend it to anyone for their diesel truck needs.
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April 2022 by Brandon Ho
I was beyond impressed with the work Jon and his employees did. I had been calling around shops for quotes on my LLY which needed headgaskets. JT's stuck out to me because out of the 20 shops I called, they had the best customer and gave me a reasonable quote. They were able to fit me in quickly and kept me updated with the progress and the hiccups they ran into with an 18 year old truck. They did a phenomenal job with the work and when going through the work they did, they didn't cut any corners. Even with the engine harness, there are high friction rub points and they had put high friction tape on those areas. I will absolutely be going back to them for diesel work and will be recommending friends as well.
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February 2022 by Stephen Normandin
Very professional, Do great work 110% satisfied they now have all my Buisness. I called them to have service done on my company truck that was due to hit the road the next day and really needed it done that day. John says to me after I explained the situation, bring it down I will squeeze it in for you. This is after all other places could do nothing for me. So a huge thank you to John and everyone @ JT’s Diesel Performance
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February 2022 by Southernhope YT
An amazing guy, always does the most amazing job, won’t go to anyone else but him
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January 2022 by Liam Saindon
very nice! easy to work with.
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October 2021 by Brian O’Callahan
Great shop! Jon’s a wiz. I’ve taken my truck here several times for performance work. Jon regeared my truck to 4.56s. The Shop does great work. Highly recommend. My go to diesel performance shop. I wouldn’t go anywhere else. Very professional shop and one of the best in New England.
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September 2021 by Kyle Bouchard
Highly recommend Jt Diesel Performance for any of your diesel needs or issues as they do the job with great workmanship and high quality! Dropped off my 1997f350 with snapped and crusty manifold bolts and now the truck is like a whole different animal after John replaced the manifolds. Thanks again JT Diesel Performance!
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September 2021 by Brian Mathieu
Excellent work awesome diagnostic service
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August 2021 by Dawn Eisner
JT’s Diesel Performance diagnosed and fixed a complicated fuel pressure problem the Chevy dealership in NC didn’t find or fix before we left there on vacation to New England. After three breakdowns along our route while hauling a 32’ fifth wheel and two tows to different places, we are grateful to find them. We can’t thank this shop enough for their professionalism, expertise, and willingness to immediately take and work on a difficult, intermittent problem several other places missed or didn’t fix correctly. After 500 miles and a week later, we have faith in our truck again.Thank you all!Dawn and Roy
