wat should i go for? wats the best one as in horsepower gains
I like Fidanza...I don't think it "gains" you horsepower, but it frees it up bro
It doesn't give you more HP but it might feel like it...at least in first. you might be able to tell in 2nd but i doubt it. What it does is let you rev faster. Furthermore, a lightend fly wheel can give you longer engine life because of less rotating mass on the main engine bearings.
You won't need it at all unless you get a Turbo or a supercharger... That is the only way they actually help enough for the cost.