Originally Posted by NFS13
10whp? Didn't you mention more in your first post? its 27 + overboost C'mon man, if you are going to take the anti-is side at least be consistant.
Pre tune on both, IS has a 30 WHP advantage, 40-45 TQ advantage with Overboost function. Both, after tune only, 10-15 WHP advantage for IS, about identical TQ.
Dyno graph on tune only:
346 WHP for n54, look at my previous post for N55 dyno, 330 WHP. TQ numbers identical, there is your IS advantage.