Cory's Performance 1352 Combermere Drive, Troy, MI 48083

"My car was literally a basket case. The engine was in 3 tuperware totes. Cory was the only shop that would touch it. Repaired the blown head gasket, replaced the Optispark and replaced the water pump. New plugs, plug wires and an oil change. The car is now a daily driver. (when it is not raining or snowing). I'm getting ready to have him put in a new clutch soon. While I've become friends with Cory and I stop by the shop routinely I have heard a customer state that after his engine was rebuilt he immediately took it to the drag strip and blew the motor. (No break in period) Cory honored the warranty even though he did not have to and invested his own money in the replacement parts. No thank you or anything other than a bad review. I heard the car running after the final repair and I wish my car ran that strong."

"The worst experience I’ve had with my car. He had my car for a total of 81 weeks. 1st time I got it back the motor blew in 40 miles, I just received it back for the 2nd time and the car will not stay running. I took it to another tuner today that believes the cam has been installed improperly , now motor has to come out again. The lies he has told me over the last 81 week are unbelievable not to mention the lack of attention to detail in his work ex: burnt wires, oil pan leak 2x . I should have known by the look of his shop when I first walked in. I contemplated not creating this review but when he now has not returned my calls I’ve had enough. If you value your car like I do , do not take it to Corys Performance."

"Cory is a one man show. Excellent professional. Down to earth. Very informative. He exudes confidence. Cory received my car w a 1000hp build. I inherited the vehicle and want my car tuned so i know what i have as they say… Cory is also changing all my fluids and installing trim pcs, tires and wheels. I’ll keep you posted as to how it finishes up!"

"Cory came recommended from several people in a Corvette FB group I'm in. Everyone said he did great work at a great price and they were right. Cory did a multitude of maintenance, repairs, and upgrades on my Z06. This will be my go-to shop for my Corvette from here on out."

"Awesome dude, really knows his stuff. Been dealing with headache of an issue, called Cory up and he got the car right in. Re-tuned my corvette and got it running 10x better. Will definitely be going back for more!"