There may also be some error in the airflow estimate because the efficiency and other turbo related quadratic coefficients are no longer correct. It may be possible to use the coefficients from the 2017 3.5 but not sure if anyone does that.So hows that work out for hp at the crank based on lb/min. so at 68lb min your making 680ish hp crank?
I have seen spikes of 52lb/min on my GT's, but it hovers around 44-45lb/min on long pulls. So i should only be at 450hp crank, and 400 to the tires roughly right?