when you have the AC on, it will increase RPMS to match necesarry output, but going from standard idle to 2k is a bit much. have you run the codes on it yet? i know on my e30 when AC kicks on it will jump about 200-300RPM...and that fucker will frost my nuts.
R.I.P fast 6
Two wheels or Four, I'm happy as long as the throttle is pinned.