Quote Originally Posted by Jon K
Not vortech based, its an ASA blower clutched, as used by Alpina. 320hp @ 11 psi is very low. RMS probably had something to do with that. 8 psi 3.0L's are making 315, 10 psi M3s are now making into the 380's - 400's
Please re-read my post, I stated that the only thing that was RMS was the pulley. And you are incorrect in saying that 320 is low, its actually right on target considering that I was still running the OBD2 manifold, and the tuning was on the conservative side(by design) as it was a track car. AA tuned a little on the rich side as to try and keep cylinder temps down.

M3's that are making 340 to 400's are running a few more mods that I was not. OBD1 intake, exhaust, larger injectors, and even cams are a few of the things that takes the M3 to that level. Beleive me, you are preaching to the choir here....