just wondering what size exhaust would be best for an N/A and F/I TC

 

I've seen N/A tC's with up to 2.5 and turbo from 2.5 up to 3.

People here will say 2.5 is to much for N/A but I've seen it work very well on a dyno so w/e.

 

2.25" is good for mild N/A setups, up to 2.5" if you have more custom work done. You may see top end power increase, but you'll lose some low end power with the bigger exhaust.

For F/I, 2.5" should be good for a supercharger and mild turbo, but 3" is better for a properly tuned turbo.