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October 2023 by Dan B
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.
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September 2023 by MrRedbird5254
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!
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June 2023 by Arik Burns
Questionable at best so far.They say they only dyno cars if they tune them. The Owner made me think otherwise. Then stated that they wouldn’t.Another miss. I’ll still be on the search for a company that can take care of my car that isn’t in Illinois. Pretty dumb.I wanted to spend money here but without a baseline dyno run, I can’t be bothered.I guess I’ll assume they do good work, I have no way to know. They wouldn’t take my money sadly.They’ve lost customer a customer, for now.If this changes, I’ll update my review.
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February 2023 by Shaun Kircher
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!Services: General repairs & maintenance
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October 2022 by Megan Hess
My boyfriend, Jamie E, recently had his newly purchased, used WRX here for a vehicle inspection, exhaust repair, and tune. The guys at the shop were very professional, knowledgeable and told him about issues with the vehicle that weren't originally known to him. Tom kept him updated and informed during every step of the process, which was appreciated.After they tuned his WRX it drives the way a WRX should. He will definitely be back and recommends this place to anyone looking for work done on performance vehicles.Services: Auto engine tuning
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August 2022 by Reynaldo Vellon
Called and got instinct great professionalism and customer service. Took about 3 minutes for me tell the guy what I wanted and when. The other 10 minutes was spent talking about cars. Felt like I knew the guy for years ?. Nonetheless took my car in and in about 2 and a half hours got my cat-back installed. I am very happy with the job that was done and with the whole crew. Guys were very knowledgeable and honest about what they know or didn't. Again spent about 15 minutes talking cars. The guys even show me my old exhaust and show me where it was leaking. Thanks again fellas. BTW this isn't a freak review! ??♂️Service: Exhaust
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June 2022 by Matthew Strong
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.
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January 2022 by Danny Pejsa
They worked on my 2011 Subaru outback, replacing subframe and entire exhaust system. Great service, really took the time to make sure everything was done right and in a timely manner. Would highly suggest this shop if you need honest work done, and will tell you if there is anything else the needs to be done on your car to drive safe!
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October 2021 by AlphA Racing Development
Quality service, every time!Great guys, experienced and capable of anything you can dream up!
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August 2021 by scott kastelic
Quantum Performance is a premier automotive shop. Aaron & Tyler are excellent and professional at diagnostic work, repair and install. I high recommend their service to anyone looking to have aftermarket parts installed. They only recommend parts that they feel have superior quality over cheaper brands, “you get what you pay for”. If your looking for work or tuning this is the shop to go to.Services: Tuning
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August 2021 by Hayden Erlinder
Shady business practices, don’t come here. I brought my wrx to Quantum suspecting that I had rod knock, they inspected the car and found that it was in fact a lose spark plug. They asked if I had ever changed the spark plugs which I had not since I have not owned the car for very long. They offered to do a compression test to make sure no more damage had been done. The mechanic came back out 30 minutes later and told me that my cylinder 4 was down 55% (cylinders 1-3 at 150psi and cylinder 4 at 118psi) and that I needed a new engine. I was quoted over $10k to replace the motor with a new stock short block.I then took my car to another much more reputable shop which quoted me a much lower price to replace the motor (about half as much). The shop called me back later that day and told me that they had performed multiple compression tests both while the engine was cold and warmed up and determined that the engine was completely healthy (all cylinders within 6psi). Furthermore they said that it looked like a compression test had never been done on it as there was no evidence that the components that need to have been touched in order to perform the test had been touched in months.They tried to take advantage of a younger owner with less mechanical experience. If I hadn’t taken it to another more honest shop they would have scammed me into unnecessarily spending $10k to replace a perfectly healthy motor.Services: General repairs & maintenance
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August 2021 by Brady Steger
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.Services: Exhaust
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July 2021 by steve deitrich
They don't know anything about cars and tried to get me in trouble with the law!!! And left with a misfire on cylinders 1, 3, and 4 that wasn't there prior to arrival!!!It was supposed to take 45 minutes to install a basic tuning map, after an 1 hour and 15 minutes the guy in the office went to see what was taking so long, and the owner comes out and says they won't tune my car because it doesn't have a catalytic converter, the check engine light is on, and a couple other things... the car ran great until I married it with a new cobb v3, not knowing it would delete my previous tune.Long story short, they were telling the COPS I had an illegal exhaust and I wanted them to illegally delete the code (reason for check engine light) and tried to get me a fine and not be able to drive my car home with the check engine light on, stability control light on, and cruise control light flashing! Non of which have ever been on prior to going there! Furthermore I HAVE A CATALYTIC CONVERTER!!! I HAVE A COBB GESi 300 HIGH FLOW!!! But the owner and so called master tech didn't know what it was!!Do not take your vehicle here unless you want it messed up! The reviews with 5 stars are fakes, made by their friends!!!Service: Tuning
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January 2021 by Jeremy Lee
Amazing customer experience!
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January 2021 by dough boii
Left a voicemail during business hours. Well the weekend came and went and on Monday I was expecting a return call. Never got one. Is this place even open? Will be taking my business elsewhere...
