i dont.... i was actually pretty happy with my outcome. I was'nt aiming for a 10 sec car or anything like that. I just wanted a little more performance out of my car and didnt really feel like selling it. I wish I had a chance to get a run in it when it was stock bottom end. I was beating some of my buddys that went thru the traps @ around 103 and my turbo kit cost less than a $1000. I thought it was a decent bang for the buck.