this is also posted in S2000 Talk but no responses.

Hi guys, I have a question. I have some minor tunings to my car. Not FI. If I get 4.56 gears, Exhaust, VAFC, Flywheel with a VAFC Installed withouut a CAI, do I need to get the VAFC tuned again after I get a Comptech Cold Air Box??

 

You could probably get away without tuning it again, but you should do it anytime the A/F changes... a CAI would qualify. As I said though, you may get away without a retune simply because the change is so small.