So im seeing that general consensus is that this motor is underrated at is probably closer to 330 at the fly. I am pretty suprised at how strong this 6 is. Just coming out of a 05 gto that i put a 403 stroker in and put out 485/475 at the wheels, i cant wait to get into my 335i and try a few things out to see what kind of power this thing can put out.