I used L&L in covington and I am very satisfied. I wanted to go to RWTD but my car wasn't able to be driven that far. I was having some trouble with my car after I installed my whipple and the necessary goodies to go with it. They fixed it up for me and tuned it. It put down 566rwhp and 536 rwtq on their mustang dyno at 15.2 # of boost. It did take a while for the work to get finished, but they were very helpful and easy to deal with. Pete did most of the work.