Originally Posted by LarThaL
Don't fall for the power trap. Accept the fact that no amount of power will be enough. The M3 has plenty of power, even in stock form. If you had a 200hp car and said you needed more power, that's different, but at this overall power level, start looking at other subjective factors.
No matter how fast your car is, if you drive it enough, you brain adapts to the speed sensation and it won't feel as fast. This is a physiologic fact.
Rent a base model Civic, Corolla, etc for a month. Do not drive your M3 during this time. Then, go back to your M3. Let's see how you feel then.
I fell to the trap on the C63 power and exhaust note. It was an expensive mistake that I sold it after 9 months. I am now awaiting for my re-delivery of my M3.