My best times were after hot lapping and I think it's because if waiting 1 hour or short periods the IAT's actually start out too hot from sitting and cooking without air moving. I have a private track day this sunday (drag racing) and I plan to spray the intercooler with water while waiting to see if it helps. I don't have high hopes for traction because I'm running lots of negative camber. (Just had a solo 1 event sunday and don't have time to realign.) I actually started my laps with IAT's higher at the beginning than while running on the track! They went down under boost! Soooo, heat hurts. Do you data log IAT's?

Les