Rob,
Chuck at COW fixed my C5 which another vendor worked on. They fucked it up, and Chuck got it running great. When I got my C6, I brought it to him right away for intake, exhaust, and tuning. I'm loving the car now. He talks alot, and you will end up at the shop for a long time , but his work is first rate, and he will not let the car leave the shop until it is %100, and performing exactly the way you want ( unlike the other place I brought my C5 to). After he is done, he goes out on the road with you to make sure you like what he has done, and will adjust it any way you want.
Ralph