Rated R Performance LLC, San Antonio TX

I stopped to see about an appointment to diagnose a sound with my Supercharged C7 and Nate took extra time to come out look at my car and show me what I could do to fix it myself. He was super helpful and didn't make me feel stupid for asking. I'll definitely be back to have them do more performance upgrades on my car!

Took my ZL1 to get tuned by Nathan, after having a bad experience at another shop Nathan took very good care of my car and got it running better than ever. Highly recommend Rated R Performance, really the best performance shop in town.they take pride and joy on working on these cars and always go above and beyond to make it right.

Nate takes this stuff serious. I've never met anyone who knows so much about LS and LT engines. He is at the top of his game! I brought my vehicle in for some popping issues in the exhaust and he got me in quick and worked on my truck on a Saturday which is unreal!

They gave me detailed information on what was happening and what needed to be done to fix the issues. He even found an issue that I didn't bring it in for and they gladly fixed it. They tuned the truck after the work and brought me additional power and torque. They love what they do!

When it came to deciding on what to fix Nate guided me on what was important and what I really didn't need to spend money on since I wasn't using this vehicle on the race track. He didn't just sell me something. He truly took care of me and for that, he has a customer for life. I highly recommend this shop!

My son and myself are working on his 2015 Chevy build and were looking for the next step of a performance dyno tune. I did alot of research through out San Antonio and surrounding area, I was recommended to Nate at Rated R Perfromance and after speaking with Nate we decided to use Rated R. I am by no means educated in performance upgrades, Nate answered all my questions and gave me more information than I expected, he never made me feel like I was a hassle to work with as other performance shops did. He was very professional to work with and even filled us in for future upgrades to work towards. I highly recommend Rated R Performance for your performance upgrades.

Great place, learned some stuff about my car, will definitely be coming here for future performance mods!

This is literally the only shop that would ever touch my car very friendly staff and Nate always looks out for his customers best shop in town period!

After dealing with several other shops in town I finally brought my truck to Nate at Rated-R Performance and won't take my truck anywhere else! They are extremely knowledgeable, do great work, and stand behind everything they do! Nate is very laid back, easy to work with, and most importantly very honest and upfront. If you're considering doing any performance work to your vehicle don't take it anywhere else!

My Camaro came out great and drives phenomenal. I could be more pleased with the work I done. I'm very glad that I found this shop. I'll be looking to do more business with them in the future.

Best shop in San Antonio ever! They set the mark for performance shops with professionalism and knowledge.

Best shop in town, customer service is top notch. Nate actually cares about each car that comes out of his shop and is straight forward with you. Not just another salesman looking to make a dollar.

Talked to Nate about tuning my car before even committing to anything and was professional and communication was great, dropped the car and the same day was ready and running better than ever before.

Nate did a great job tuning my 2011 Silverado Friendly, Great Prices, and Great Service definitely will be back if I need any performance mods done

Nate was very friendly and we talked at length even before I had committed to buying anything. Very knowledgeable, and honest. Communication was excellent. If I called or texted i had no issue getting a reply or update on my vehicle. Very happy I went with these guys and will definitely be back.

Mr. Nate great work thanks for helping me out with installing my lower springs for my jeep. His service technicians did an great job.

Guy was super helpful, squeezed me in for a dyno. I had to cancel due to change in schedule. He was also nice, friendly and understanding when I cancel.

Nate and the guys were great! Kept me updated with everything that was going on and educated me along the way. Car runs smooth couldn’t ask for anything more beyond satisfied. Will definitely be going back for future services. Great work Siller.

Nate was great, knowledgeable great pricing and really helpful I'd recommend sillers to everyone

Extra 50 hp with ported heads and an ls6 manifold for my c5! They got it done very quickly and I couldn't be happier!

I took my 2014 SS Sedan to get an underdrive pulley and CNC heads with trunion upgrade installed, I've been here many times before and never had a problem! Nathan and his crew are the best! Nathan recommended H & H heads out of Houston and on his recommendation i agreed, heads came in a timely manner and the work was done in the same fashion, I texted Nathan later that night and i told him "This is not the same car! " I have a stock stall cam with all the bolt-ons and just with the addition of the heads was a night and day difference! I'd recommend Nathan and his crew for all your performance goodies! Along with there professional opinions and recommendations! Its been almost 3 months and I love the way it runs! Thank you Nathan and crew! Keep up the good work!

Nate and Justice are very knowledgeable, they take the time to listen to your needs/concerns address them and make sure your satisfied with the workmanship. Nate did an excellent job on tuning my 2001 Silverado. I would definitely recommend Siller Automotive & Performance to my friends, family along with anyone who asking for a recommendation.