My suggestion is in my signature. Proven already and consistent. If you want the possibility of going fast with the achievement of still figuring it out, then stack them, go bigger pullies, you name it. The C32 I believe doesn't have this problem because they don't have a CAI that introduces the air that the NW does and providing more boost, hp,etc... so their motor hasn't reached full potential yet. So if 11.9's aren't fast enough, wait on the sidelines until someone has figured out the tune for the rest.