Anyone really serious about getting their car worked on and/or tuned properly should go see Tony at UMS in Mesa, AZ. He's got a really nice shop (proper tools, equipment and clean) and alot of experience to back up his services.
I was able to take a drive their all the way from just North of Los Angeles (450 miles) and it was well worth it. Although I was limited on time, Tony found several issues with my car and got them resolved for me without wasting my money on Dyno time that would have been useless....that's what the next trip is for.
I have seen a few people on the forums make a few negative comments about the prices he charges and I verified that they are inline with most other legitimate shops...85 per hour...140 dyno tune SCT...etc. Well, bottom line is if you want quality work then you need to pay for the correct tools/shop/experience that comes along with it. I recommend anyone from southern Cali area go there if possible...especially since there are no other really good SCT Dyno shops in the area.