Quantum Performance 288 Meadowlark Road, Fredonia, WI 53021

"This performance shop is unparalleled when it comes to knowledge and execution of their craft. If you are ready to make a serious move to increase the performance of your vehicle, these are the people to work with."

"After weeks of researching local tuners I decided to go with quantum performance to tune my 06 STI after all the good reviews I saw online and im glad I did. They did a great job and everything went smoothly. Highly recommend them for your tuning needs!"

"Having taken my 2018 WRX there for the first time, upon a recommendation from a good friend, I was not disappointed. Really easy communication, and they asked about everything before performing any work. Not to mention I got my car back quite quickly after work started, being that it was my daily and I needed it asap, I was super pleased that they managed to get it done so quick, for a first time customer. Super pleased. Would definitely go back, and do plan on it for any future work!"

"I had a great experience and I would highly recommend quantum to anyone. Josh the owner was very friendly and engaging and Franklin the general manager was very helpful. I wish I could remember the names of the other mechanics but everyone was Super friendly and professional."

"Very knowledgeable group of guys who know what they’re doing. 500 miles into my break-in and my Subaru has already been running better than ever. Definitely recommend them for any performance build, or anything Subaru specific."