I've got AEM CAI, cat-back exhaust and am ordering a DC header next week for my H23...when will I need a FPR? Or will I?

You dont really need it.

I keep hearing that I will run lean, but the prelude has like 310cc injectors and I don't think that I would...Was thinking put the header on, run car for a bit and then pull the plugs and look at them...

get an apex s-afc :)

Your ecu should adjust fine to simple bolt ons. Even if it does run lean, it won't be to the point of detonation.

Yeh just make sure to reset your ecu though.

I always disconnect my battery cable before install and then reconnect after, to reset...thanks for the info guys.

B16EJ1,

Nice looking civic, I raced a 94-95 civic ex model with a B16 this morning, he stayed at my door up till 90, very impressive...He has I/E that I know of and has more that I don't know of...