I think a turbo setup would be more useful at the track. The problem you'll run into is heat (turbo or SC) so you have to solve that first. Keep in mind that FI track cars require a LOT of maintenance. So if you're stepping into an E46 M3 because they are affordable, I'd reconsider going FI. Its costs a lot.
So can you run FI on the track? Depends on how deep your wallet is. Is FI going to make you the fastest one on the track? No...only skill can do that.
2013 F30 328i - Melbourne Red
2011 E90 M3 - Monte Carlo Blue
2004 E46 M3 - Imola red
Last edited by bigjae1976; 09-20-2012 at 05:25 PM.