r32 gtr, power level was 396hp then went to 435hp
massive improvement in throttle response and power. car felt much torquier through the rev range and a lot smoother. car felt almost transformed to drive.
the car was tuned at pitts so the power fc wasn't a dodgy tune either.
but i must say a fair amount of time was put into this tune, more than what was possible with a power fc, for instance with the wolf i have tuning points every 125rpm right up to the 8500 rev limit.