Bang for buck
Alright where to start, I am looking into getting a e46 m3. And I was curious as to which route is more sufficient for power, turbo or supercharger. I want to run around 550 hp. Or is it possible to get close to that with the car being n/a? I have also heard of people doing the e85 map in the m3s, is that just a rumor or is it possible? I'm new to this tuning world so any help would be great thanks.