I understand conditions from the dyno and the track would cause difference in power but your car is running times like a 400RWHP car. I doubt conditions would cause a 100RWHP loss. Ive seen guys in similar weight cars with that much power go mid to high 11's and always AT LEAST 120MPH. Can you please post your first few time slips. You were most likely heat soaked the rest of the runs, it would be interesting to see how your MPH changed with power loss. Thanks