Its all subjective on what you are used too, my M3 with the Dinan stuff and 4.10 gear felt great and pull hard but did not impress me too much. Maybe your accustomed to other cars that are just as quick or quicker. our comparison to the SRT close but not totally, the M3 powerband is up top, the AMG motor has more down low.
Take the advice of others and test another M3, if you still feel the same then the M3 is not for you, the M3 is a strong car but not "WOW OH $HIT". Its a well rounded car but does not IMO Shine, I like it for a daily driver but nothing more, some will be hurt or offended by my comment but that is my oppinion.
02 M3 SMG Vert
Dinan 3.91 / Dinan SMG Software / Dinan ECU Stage 1 / Beyern Mesh 19's / BSW Sound / EAS LED Angel Eyes / ETC..
94 Supra FOR SALE, OR TRADE FOR NSX
Precision SP63 / Tial / Apex-i / TRD / Seibon / Do-Luck / CCW / Recaro / Eibach / Top-Secret / Greddy / ETC...