Accessibility
- Wheelchair accessible entrance
Reviews
Reviews are sorted by relevance, with the most helpful and insightful feedback listed first for easy reference.
Dominique Lord
6 months ago
These guys know what they are doing and it shows. JR and Shane are both extremely knowledgeable and their pricing is on par with the quality work they do. I ve had my truck tuned by them twice in lieu of numerous modifications and a built transmission installed along with some other new drivetrain components. Transmission had issues from the manufacturer and JR helped me deal with the manufacturer and the issues with the trans all while installing it in a timely manner. Truck runs great several months later and I have peace of mind that my money was well spent. They have gained a long term customer with what I have seen from them.
Jacob Reid
a year ago
Took my C7 Z06 in for a tune, pulley, and shocks, but brought it in butchered with additional problems from another horrible shop. For J&S this was no problem and they did an absolutely astounding job. They not only installed every part I had asked for perfectly, they took their time with a tedious problem, assessed it, and then provided me with the quickest solution. The car has ran great, at its fastest since leaving the shop with no additional issues. JR also guided me towards better steps to take in the future with the vehicle as well as calling me a month later to make sure everything was still 100%. I will be coming back to J&S for all my corvette needs; They are, speaking from personal experience with tons of other shops, the best automotive shop I have worked with in all of Colorado.Services: Exhaust, General repairs & maintenance, Auto engine diagnostic, Auto engine tuning
Mike Colm
6 months ago
I have an LS swapped car. When it came time for the tuning J&S was amazing. They were able to give me a base tune with just the ECM out of the car. Doing this allowed me to iron out any leaks or problems with the build. After the build was complete I took it to them to finish the tune. While the car was there they even repaired one of the pins on the OBD2 port that was giving them a little bit of a fit. JR and Shane are extremely knowledgeable. I highly recommend using them!
Roberto Martinez
5 months ago
Heard great things about this place and got recommended by a friend but sadly they did not seem very interested in Fixing my car or even provide the services there known for i went in 2 times, called about 4 times and even spoke to Shane simply said they would get back to me and never did. Wish their costumer service was better or even bother to call back and say they cant work on my carService: General repairs & maintenance
Gustavo Flores
10 months ago
Amazing shop! I brought my Cadillac Cts-V to this shop to get some oil leakage fixtures and a tune. When i took it up the first time for the oil leaks they were letting me know everything was going well and if they found other small problem that i did not know about in the car they would let me know right away. JR and Shane are both great people and very knowledgeable. Would 100% recommend this shop to anyone!Services: General repairs & maintenance, Auto engine tuning
Daniel Wolff
a year ago
These guys are awesome! Talk about performance automotive knowledge. Not only that but they are honest! They hooked me up with the necessary components to make the pro charger kit I put on my Silverado actually perform properly. I always had problems after putting the kit and the guys at J&S were the only shop that knew what needed to be done. I m really enjoying the truck now! Thanks a ton guys! See you when I m ready for the next upgrade!
Jesse Montana
7 months ago
Have gone to these guys a few times now, they have dyno tuned my car, fixed some stuff me and my buddies installed, and are ALWAYS super up front and professional. They don t hide things, they don t bait and switch like most shops, they actually care about your car and in my opinion are the EXPERTS on LS engines in Colorado. From what I ve seen they do dodge, chevys, and most any of your boosted/muscle cars. These guys are no joke. They really have experience and know what they are doing and will help you reach any goal. (As long as you have the budget of course.) you certainly are paying a premium but in my opinion it is worth every cent and then some because you are getting BEYOND premium service. Can t wait til I can pay these guys to procharge my Camaro SS. Stop debating, go to this shop for your car. Period.
Mark Collier
10 months ago
These guys are the BEST!! I asked on a Facebook group who they would recommend, and J&S was the most suggested. I am so extremely happy I took my Procharged Corvette to them to have the differential swapped out. While doing the programming they found issues with the tune and with the Procharger installation. They corrected all these issues and now my car runs better than it ever has. My Corvette is a Show car and they treated it as such as they promised they would, and they called me after I drove the car to insure I was happy with the tune and the job in whole. Their pricing was very reasonable, in the future this will be the only place I take my Vette and my other vehicles for any needed work I cannot perform.Services: General repairs & maintenance, Auto engine tuning
Christian Font
4 months ago
Tbss wouldn't pass emissions due to a bad tune after long tube header and exhaust put on and these guys street tuned it and solved all the issues .
Alan Rogers
2 years ago
There were some speed bumps along the way and they had my Trans Am for quite a few months. But with all that had to be endured these guys are top notch. Very professional, outstanding and very knowledgable. Thanks J&S!
Pamela Duncan
2 years ago
These guys are great. Walked me through the entire process. They did a great job installing my new A & A Supercharger and going over everything with me. I highly recommend this shop.Service: Auto engine tuningService: Auto engine tuning
Manny Flores
a year ago
Recently took my c5 z06 corvette to J&S after having misfires and other issues that I just could not find the cause for. These guys did an amazing job finding and solving my issues. Finished the job a few hours ahead of scheduled time and the car runs AMAZING! super happy with their service and would recommend to anyone with an LS/LT. Not to mention their prices are fairly reasonable
Simon Izaguirre
2 years ago
We're very fortunate to have J&S Performance serving our community and I highly recommend them. They installed a Monster clutch on my Camaro and it works perfectly. This job was turned down by several other shops due to the precision required for the job. These guys were great to work with, thoroughly answered all of my questions, have fair prices and are highly skilled.Service: General repairs & maintenance
Matt Branca
3 years ago
Remarkably good experience. JR spent quite a lot of time giving me a crash course on upgrades for my Camaro. I'm a mechanic turned service manager myself and have found that informed customers make happy customers. It was refreshing to find someone else out there who actually seems to like what they do, and cares about their customers more than just making a buck. That's the kind of thing that makes me want to spend my bucks anyway.
Tanya
a year ago
JR has worked on 4 of my cars 2 ls swapped rx7's ctsv and a truck. They are great people and also are on top of getting the biggest bang for the buck. Going to building a twin turbo s10 next and It will be dropped off with them. Excellent people and very dependableService: Auto engine tuningService: Auto engine tuning
Brad s
3 years ago
JR and Shane are phenomenal. I installed a performance crate motor in my 2000 GMC Yukon XL and had them tune it for me. They are extremely knowledgeable and knew exactly what needed to be done. They first set me up with a break-in tune and after the break-in period I went back to get it re-tuned on the dyno and to no fault of Shane my driveshaft blew into pieces. Again not Shane's fault. These guys are awesome and worked with me over a 7 month period of time before I could get my truck back to them for the final tuning and they only charged me the one fee so essentially my final tuning was free and I fully expected to pay again since I took so long to get it back to them. My truck runs AMAZING and the best part is they listened to my input and needs and boy did they deliver! I will be bringing them my Tahoe after I build up the engine! THANKS J R AND SHANE! YOU GUYS DID FANTASTIC JOB!
Kid Cowles
4 years ago
1st off I'd like to say, in normal circumstances I always do my own work. In this case, it was not feasible for me for several reasons. I have been following J&S for awhile now, and I decided to give them a shot.My estimate was impressive, as they showed they know what they're doing by giving me a firm price where as local shops gave me a range which makes me believe they don't know what they'redoing. When there was a question, they did their research and came back with options and answers.They knew all the specific issues already so I really didn't have to explain. They took care of me and my car like no one else!Then the closing call to let me know the details....They worked on my car as if I were to do it myself. They even went the extra mile and fixed a couple of simple things I didn't even know about my car!In the last 25 years I have not had an experience this amazing!Then delivery......My car is back, better than ever!!If I ever need anything, I know I can trust them hands down.Thank you very much J&S!!!!
Ty_16! STI
5 years ago
I own a 2005 GTO and wanted a cam and full exhaust done. After some research, I was recommended to come here. I couldn t be happier with the outcome of my new monster. The entire team was professional, kind, and extremely knowledgeable. They took there time and pretty much walked me through step by step of the process. It may take awhile, because they are really busy but if you want your vehicle to be done right the take it here. I will continue to recommend these guys, as others have done to me. Thanks J & S for the outstanding work. Looking forward to the future business to be had.
Tom Sears
a year ago
JR & Shane are AWESOME & a pleasure to work with. Great shop with a lot of experience working on Chevrolets.
tdwightusa
a year ago
Shane is a monster. After the tune on my cammed 2010 Camaro SS, I took it for an emissions test. The guys at AirCare couldn t believe their eyes or ears!!Service: Auto engine tuningService: Auto engine tuning
Brandon Mcbee
3 years ago
It's been an excellent experience dealing with J and s performance there the best I've ever met with their knowledge and capability of what they can do I have had my car completely rebuilt by them would recommend them very highly
Jeffrey Erbert
6 years ago
JR, Shane, and company are masters of their craft. They're honest, straightforward, friendly, competent and committed to making sure you're vehicle runs perfect. Thanks guys for all your help, my Silverado runs like an absolute dream!
David Hogle
a year ago
Shane Street tuned my 06 z06. He said he thought he got 40-45 more hp out of it. All I know know is that above 4,000 rpm i' glad I got a seat belt and my Depends on...-bubba-Service: Auto engine tuningService: Auto engine tuning
jayhole steck
4 years ago
Great bunch of guys. Very knowledgeable and professional. They go above and beyond to make sure you are happy. You will not regret bringing your vehicle to them.Thank you J&S
Travis Bird
4 years ago
Excellent service. These guys tuned my Avalanche after I did a cam swap and muffler upgrade. Well worth the time and money spent. I'll do business with these guys again.
Ian Jones
5 years ago
tiny bit of unorganization. If you push back MY deadline that you agreed to, and want more than 4 weeks to do an engine swap and street tune, i will have to cancel appointments. It IS a 17 hour drive. You did have my engine dissasembled for months since parts arrived, and I didn't have 4 more hours. I am missing parts, for whatever reason. I sent an email with the list of parts as soon as I had my engine assembled and knew what was MIA. thx for reaching out as soon as you saw my previous review
Chris Healy
2 years ago
Stopped in for some advice on a new fuel injection system for my car. They took the time to explain several different systems and pointed me in the right direction. Great group of guys!
Cody Sanborn
a year ago
Absolutely phenomenal customer serviceJr and Shane are top notchWill only use them for my vehicleServices: General repairs & maintenance, Auto engine tuningServices: General repairs & maintenance, Auto engine tuning
Michael Zopes
6 years ago
Shane and company are a bunch of great techs down there. Helped me understand what was needed for my vehicle. Car is running great.
Jeremy Lopez
8 months ago
Have had a lot of stuff done by the team here. Turbo kit, lowering kits, bolt ons and tuning. Service has always been top notch and will come back for more