Originally Posted by FDfranklin
Meh.. That dyno must be reading super low or he was on stock map.
Here is me putting down almost identical numbers with the n55 beta tune:
DynoDynamics always read really low, they call them the heartbreakers. The guys at the shop told me they typically read 12-15% lower than a dynojet, so that would be equivalent to approximately 355/410. But the only real way to tell how much of a gain you'll get is to compare vs runs on the same dyno with and without the modifications.