I think most have pretty much proven that a CAI on the supercharged application does nothing but mentally make you feel like it's doing something. Placebo kinda thing. Makes you hear the whine better. The amount of heat added by the supercharger is outrageous.
A 3.3 will require probably Autolite 104's, headers, cam/rockers more than likely, and a decent tune. Even then, you might still have knock.
I have a Gen 3, Comp Cam Xtreme Energy cam, 105# springs, some tuning, a 3.4" pulley, and I still see knock. But that's because something is screwed up somewhere and I can't seem to find the issue...
But do ALL the maintenance first before doing any mods.
As you pulley down, check for knock. If you start seeing knock at any time, that pulley is probably too small. If the knock is small enough, it may be able to be tuned out. Just play it safe and keep the knock as close to 0 as possible or you risk an engine.
