Well Scott "the other tuner" has tuned my all stock single cam on 15 psi and I daily drove it for a year with out any problems what so ever. The car still runs flawlessly and I would and will let him tune any car that needs it in the future. When tunning Scott has alot of things in mind not just power. He even takes people daily driving these cars into consideration and trys to better their gas milage when out of boost. When it comes down to it Scott has just done all of his homework and knows what he is doing.