Majority of our bad reviews are prior to our new owner and crew. You can read our facebook reviews
https://www.facebook.com/tmsperformanceanddyno/
https://www.facebook.com/themustangshop/
Most of the old crew went to RSS I think. Haven't heard much about them actually.
I may be bias because I work at TMS. But Matt Installed my turbo kit and Tuned it. The car has 225k Miles and it's been my daily for the past 7 years and over a year with the turbo and I have never had an issue with my tune.
Just keep in mind our Dyno reads low
I just saw this, I know it's old.
I just want to clarify that the shop has a whole new crew.
Scott works at a different shop in Auburn, WA now called RSS (Revolution Speed Shop)