Originally Posted by Lug

Unless you find an example of a NISMO and a Sport run back to back on a given dyno, your numbers will mean nothing. From what I've been able to read, I've seen a larger difference in HP. The only post of a 5 hp spread I've seen back to back was between the standard and the automatic. Generally (since every dyno gives differnt numbers) I've seen non-nismos usually hit in the 275 range and nismo usually hit around the 290 range just going from memory. That would yield a 15 hp diff at the wheels and about an 18 hp diff at the crank assuming an 15% drivetrain loss.