They do make CAI and SRI for the Corolla. I had a Takeda SRI for many years along with a Borla exhaust and throttle controller it sure felt more responsive but the total HP I saw was 126HP at the wheels from 132 at the crank before mods so I did gain some power back. If you really want more power though look at installing a turbo it from Turbokits.com as I'm doing.