Celica Forums General Discussion Exterior ADVICE

I was gonna cell my hks cat back.i drove it around allott..THING SOUNDS NASTYYY NOWW..i recommend ittt.wit cold air jus sounds brilliant..and also..How much would a underdrive pulley add to my GT? ..Is it worth the buy?

please post this kind of topic here in Custom Mods, thank you! -JD

It will add a decent gain to your low and midrange hp, depending on what you have modded already, just works by lightening up the pulley so its takes less power to turn it and more goes to the wheels, I am planning on getting a set from unorthodox as soon as my body kit and rims are on, also going to get a lightened flywheel, something you might want too if your looking for speed.