hi, i drive a 90' ef8 crx and im looking into fabricating a custom exhaust, what id like to know is what size dia ss tubing will perform the best? i was looking at some guys setups and some use 2.5" some 2.25". im running a jdm b16a w crower stage2's, hks filter, fidanza flywheel and other minor bolt ons. im going to run it straight through under fuel tank so as to reduce restrictions, so any advice?
thanks