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September 2023 by Justin S
Jeff is one hell of a tuner! I went through multiple shops trying to find someone who knew what they were doing. I found one guy that claimed he knew everything about LS tunes…. He did not. I had so many issues. I started looking again and a friend referred me to Jeff. Within a few days Jeff had all the issues fixed and the truck is running better and stronger than ever before. Night and day difference. If you’re in MD and looking for a tuner, Jeff is your guy!
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March 2023 by Oscar Marroquin
How much dyno cost for 2012 bmw x5 m
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October 2022 by justin mtn
If you want your car worked on by someone with as much knowledge as a high-school senior, this is the place.
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September 2022 by Familia Marroquin
How much dyno cost for 2012 bmw x5 m
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July 2022 by Avono Washington
How much to performance tune and get a speed limiter off a 15 Chevy Cruze
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February 2022 by Alex
A few week repair took months, when I finally got the car back, they did not reattach the trans cooler lines correctly so they leaked a ton of fluid. We paid over $300 to have the issue corrected. When I reached out to get reimbursed they refused to answer me or do anything for me.
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February 2022 by Alex Runkles
Would stay away from them at all cost, they will keep feeding you lies to buy time since they have way too many projects going on at once.
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May 2021 by Steven Neidlein
HELLO HOW MUCH WOULD A DYNO TUNE JUST TO CHECK RWHP ON MY 2017 FORD MUSTANG GT COST ?
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February 2021 by Scott Z Karg
Jeff is the man. He got my lightly modded Z28 squared away nicely. Bought it with an iffy tune. All good now.
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August 2020 by james levrone
Great Auto Shop
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July 2020 by Omarski Blagrovich
Came in for a tune and Jeff took great care of me. All smiles behind the wheel. Absolutely love the snap crackles and pops.
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May 2020 by Jerrystunts
Got parts and a tune from Jeff and I’m beyond satisfied. The car made good power and after the tune with a big cam and stall converter the drivability is perfect! Super knowledgeable zero complaints.
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December 2018 by Justin Martin
Jeff has been working on my car since June 2018 - it started off great and he did a ton of work to the car. At some point something changed though and I haven't heard back from him since August 2nd, 2018, it's now December 5th, 2018 and I've emailed, text, called, fb messaged him and his business, pretty much anything I can think of (outside of driving 3 hours to his shop). I'm not 100% what happened but I thought this should be the next step to try to get a response.
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October 2018 by Andrew NL
Great shop, good people and jeff is a great tuner, helped me out with a new sd tune and my car runs super sweet. He is also helpful on any issues i may have. And made sure i was taken care of. 15+ years of experience truely shows from Jeff. Thanks PSI!
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October 2018 by Ted Boston
Ok I hope your
