Well, I've officially been running Tom's tune in my car for a few months now, and I have to say, I wish I had done it sooner. I've read people on here saying things like, "It adds driveability." Well, when I read that, it sounded vague as hell, and I had no idea what that meant. Now, however, I see what they mean. Acceleration, shifting, air flow, everything has been tightened up. Not even when on the strip, just normal everyday things like getting groceries have become fun. Hands down, the best mod I have done on my car. Tom himself has great customer service, he generally emails back pretty quickly, with clear answers to your questions. I'm newer to car modding than some, and I even flubbed up the last like 4 datalogs, but he didn't get frustrated or anything, which was surprising, cause I sure as hell was. The car's tune has been completed until more parts are added, and just with the mods i have (in signature), the car definitely feels faster, more aggressive. Trust me, if you can spare the money, do it. You will NOT regret it.