Strong Audi is always good, do really good job and quick work, but always a week out because they are so busy. Also, 2 shops in UT to avoid are Streamline and thirty20, streamline is just a couple 20 year old kids, anything other than exhaust(if that) is not good, they screwed up my buddies GLI when they were putting in his new turbo kit, thirty20 had a guys car for a year and took parts of it off to fix other peoples cars, they are being sued and going out of business. the only shop to go to in UT for aftermarket stuff is Alex's AutoHaus, Alex used to work in the audi factory in germany for 10 years, as well as working for BMW and Porsche, and all his staff has near the same experience, they've done my exhaust, intake, chipping, and camshafts, plus they good people and can help you with stupid little things for free, they fixed my window for no charge just because they know me, they are great.