In and around San Diego I know of about 6 different shops. If you go to www.sctflash.com and put in your zip code it will give you a list of shops. Then it's up to you to call an interview which one you want to use. I would stay away from the ones that just want your money and only talk max hp numbers. Just because you make said amount of hp doesn't mean you are going to be the fastest. It's how it runs all through the power curve and drivability also. Ask them if they are also certified by SCT.