Have had a fairly significant amount of work done by Mike, on my Audi A3 - ranging from some fairly routine minor stuff, to reprogramming the ECU, replacing the turbo, and installing an aftermarket down-pipe. And in all regards, I have been more than satisfied with his work, and the service I've received. We had a few glitches getting the performance mods on my car, tweaked correctly - but Mike was very diligent about staying with it until he had it exactly right, and we were BOTH satisfied with the results! I would certainly recommend him for all types of routine service or repairs on your German car - but for any type of performance tuning, there is NO ONE else I'd consider taking my car to! Mike knows his stuff! He is not the least expensive shop in town - but you get what you pay for. And he is fair. He won't try to take advantage of you, and when he quotes you a price he sticks to it. My only real complaint, is that his shop is so damn far away (I live in the Woodlands). If it was a little more convenient, I'd probably NEVER take my car to the dealership (and I actually like my dealership!) - so I guess that tells you something.