Quote Originally Posted by mossaidis View Post
170 * 1.25 (IT gains) * 0.82 (driveline loss RWD) = 174.25 whp * 12.9 lbs/hp (ITS multipler) = 2248 w/o adders or 2250

Do you have excessively large brakes? It's a BMW, I would assume so, +100 (in your face!)... so 2350.
Could there be a torque adder? maybe, if so then add another +100 (in your face... maybe)... so 2450

IIRC the process weight is on crank hp, so you don't include the 0.82

so... maybe:

170 * 1.30 (BMW IT gains) = 221 * 12.9 lbs/hp (ITS multipler) = 2850 + 50 brakes + 50 torques + 50 wishbones? = 3000