I just bought this app for my iPhone 3G, and I'm headed to the track tonight. I'll let you guys know what I think.

I'm very excited to try it out, and might have to take an extended lunch break today. Damn, I just love toys.

I'm curious, though. What did you guys use for the drivetrain loss number and the weight? I've heard 18, 19 and 20 % for drivetrain loss. And the stats on the car say 3240 for curb weight.