As far as I know, the Stillen g3 cai's have the highest hp gain at 17.5hp. They also give the car a little bit more of a growl at WOT. I have a set, and installation was pretty easy. I love them.
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VLEDS | Evo-R | Moddiction | CF Hood Struts | F.I. CF CBE & LTH | Stillen CAI | NST Pulleys | UpRev | Z1 | M7 | Status | Forgestar | PSS | Whiteline | SPL | SPC | Kenwood | Zenclosure | Kicker | Alpine Type R
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