MPH can be skewed by a lot of things un related to the engine also... aero dynamics, gearing, stall, chassis set up, driver... just to name a few. Dyno and flow bench are tools to help you get a better number at the track but if you don't know how to use them they are worthless just like a wrench if you don't know what to do with it.
MPH will never be calibrated beyond what it is. Factors causing it to be low yes, but not high. Doug
