It is good for GTS or turboed cars, it will give you alittle bit of increase with above 2 types of cars. What sucks is our ECU has an automatic adjustment on the fuel/air curve it will trying to adjust to some setting it likes, thus the perfectly tuned S-AFC setting to your liking is not as good anymore.
1 recommandation... DON'T GET OTHERS NUMBERS!!! Reason is every car is different, though numbers will work it will not work as well. Get it tuned. Goto www.newcelica.org
in the So Cal section there is a shop that has dyno days once in awhile, get it tuned on that day