J & J Speed Shop

Jason did a great job on tuning the new LS3 525 GM crate. Fuel mileage on the way home from tune improved 4 mpg on the highway. I was at the track yesterday for the first time after the new tune and what a huge difference in throttle response. 55 laps, 110 miles, avg 89 mph laps and it ran great. If you are 2, 3 or 4 hours away it will pay to take your car to Jason . Anyone with a laptop can claim to tune a car. A tuner is like a your cars brain surgeon. Go to one with experience and proven results.

Quick courteous service always satisfied never disappointed Jay and his team are great

Helped me out with a few odds and ends for my CTS-V and always a wealth of knowledge for my other LS projects

Very knowledgeable and professional staff. Jason takes care of me every time. Never an issue, always friendly. Best part is the prices are fair for the work performed. Will continue to be a customer..

Tuned my Z71, now it has awesome MPG improvement and throttle response! Bought parts off of him for my old Focus ST also and was very timely on ensuring I had my parts quickly!