I am not and cannot say that the RIPP power curve is wrong. Only that it is unexpected based on how centrifugal superchargers work, and in comparison to dyno charts of other centrifugal supercharged vehicles I have seen.

Sounds like we need some input from Ross: do all of your dyno pulls for Black Betty have this "hump" in the torque curve at low rpms?

Also, I vaguely remember something about fixing a small leak and getting more power. Do you have dyno results with more power? If so, please email the dyno run file so I can import the the torque curve data and update my charts, etc.