Quote Originally Posted by tony
You're forgetting the added weight and the gearing on the Z.. (Supercharged VQ owners please don't kill me) but supercharged the Z's aren't too fast especially if they're not properly tuned. The procharger is one of the worst kits for the VQ (personal opinion) There are bolt on Z's that will beat supercharged Z's by far.. turbo is a totally different story.
haha i didnt forget either. the added weight still doesnt equal that of the M3( 1542 kg / 3400 lbs ~200lbs heavier than the Z). it would all be dependent on Driver skill, gearing (3.62:1 on the M3), the M3's Throttle responce (itbs stock), conditions and Tune (your right). you're forgetting the difference in Tq output also between the cars. the Z makes more low-midrange Tq stock compared to the M3, and supercharged that number would drastically increase. i think this would be more of a case of Poor driving skill