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November 2025 by William Cooper
Josh is the real deal. After taking a look at my project Camaro, He took the time to talk in-depth options with me and formulate a game-plan. Once he got the car - his detail oriented approach was evident, and he was great at keeping in touch for updates or needs. Overall, I couldn't be happier with how things turned out!
Josh is a passionate dude when it comes to his work, and one of the best mechanics I have had the pleasure of working with. An all around great guy.
I would highly recommend JS Performance!
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April 2025 by Anthony Mannino
Josh has done a lot of work on all my vehicles from a performance engine rebuild, rewiring the whole car to putting a lift and a supercharger on my Jeep. He’s honest. Tells you what you need and doesn’t sell you anything you don’t need. Found him 15 years ago after a local shop butchered my car. Great mechanic and person.
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April 2025 by Ted hrycyszyn
Josh is a great guy and mechanic. I have been using him for years on all my vehicles, from normal maintenance and on my street car. Josh built my 82 Malibu and runs like a champ!! He has recently performed a level 1 cam kit on my 2017 Silverado. I would not let anybody else touch my vehicles. He is very knowledgeable on all aspects of building car, motors and making car go fast!
I would definitely recommend JS Performance!
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April 2025 by Jim Conlin
Has been working on my toys and family fleet for years. Always honest, dependable, and thorough. You're not just a number when you come here, if you want it done right the first time they will take care of you.
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April 2025 by NOTCH Guy
I have been going to JS for years. This is the only place i will have work on my vehicles.
Very knowledgeable on regular repairs and custom combinations. Working with a small shop is nice since you get to deal with people in the know instead of a guy just writing the bill.
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April 2025 by Steven Hertkorn
JS had done extensive work on multiple vehicles of mine, each time with great results. They have always been a resource for me with sourcing parts and helping to diagnose. Knowledgeable and great staff.
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January 2025 by william bode
Josh is without question a real deal racer. He cares more about you being happy as a customer than charging a bunch of money for no reason. He even got my nitrous bottles filled in less than time than he thought while it was 10° outside. I could not recommend him and his shop enough. Great shop and great dude! You can tell racing runs in his blood and he gets excited to see everyone else enjoying it too!
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September 2024 by Kevin O'Malley
After a horrible experience at a local dealership I took my truck to JS Performance. Josh was straight forward with what would be needed for the suspension repair. He offered stock shocks and upgrade ride height lift shocks. Small price difference, so I went with the upgrade to also level the truck. Yes once on the lift to replace the shocks, there were other unknown issues with the suspension that were promptly brought to my attention and I needed to replace those issues also, to get the complete repair I was looking for. They completed all repairs/upgrade and on top of those, gave my truck a look over and gave me suggestions for other upgrades/repairs to help try to eliminate future issues with my truck. I left extremely happy with the completed work on my truck! Because of them going above and beyond with their customer service, thier all around knowledge of a wide variety of vehicles from daily drivers to race cars, and their no BS just to "money grab" like a dealership, I will be taking my truck back to them for everything needed! Knowing my truck is in a real professionals hands and mechanics that are actually looking to keep your vehicle in top shape, no matter what you use it for. You want a trusted, no BS mechanic? This is your shop!
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May 2024 by Hunter
I took my Chevelle to Josh after battling poor drivability issues for years that several other shops couldn't fix. Within 15 minutes of discussing my issues and goals, Josh had a plan and he delivered!
He completely overhauled my setup, and this thing is awesome! It runs the best it ever has in the 25 years I've owned it. It cruises on I-95 no problem, never went over 180 degrees even when stuck in traffic, and most importantly, rips when I had some open space in front of me! The throttle response is insane.
Needless to say, I'm thrilled with it. Josh made it the car I always wanted it to be, and this is only the initial tune!
The only problem I'm seeing right now is that I'm going to need to budget for new rear tires each month!
I can't thank Josh enough and I'm looking forward to the next steps.
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August 2023 by lacrosse4higher
Heard good things but they don't work on European cars in case anyone was wondering.
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August 2022 by August Kohnow
Shout out to Josh, Awesome job tuning my 67 Camaro SS Sniper EFI. Car runs great, what a difference.Service: Auto engine tuning
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June 2022 by John Smith
Great service at a great price. I am someone that works on there own cars but I am new to mustangs and wanted an expert to look over my car Josh pointed out things I didn't even know were wrong with my car. Josh knows his stuff. My car has been running great ever since I look forward to working with JS performance in the future
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October 2021 by 1 “John Wick 701” 2
Had my truck for 2 days and than say can’t do anything and start blaming everything,wiring,guy who work on engine,guy who took engine out and back in,guy who worked on Ttansmission,torque converter etc. and as I know to tune truck he goes somewhere else because he can not do anything like that.
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October 2021 by Tommy Edwards
Josh was a great find. He was timely with everything involved and was honest during the diagnosis. I went to Josh for an entire differential build and axle replacement as well as rear brakes. Wonderful experience and will do business again with him in the future. Highly recommended, he knows what he is doingServices: Custom fabrication
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October 2021 by Master William Walter
Just got my 89 iroc back from josh and I couldn’t be more pleased, this is the 2nd time I brought my car there and he always is professional and does amazing work, I will not bring my car any place else, I highly recommend JS performance!
