Mainly the rev limit. But i read that zc pistons and a y8 mani and exhaust header will raise horsepower; i think i read it on HONDATUNING or something like that.

 

Don't know about the pistons, that's probably because it raises compression (which can be good/bad, depends on what you do with it). But the Y8 manifold is probably the best flowing of the stock manifolds.

Edit: Didn't see you were asking about the manifold... But again, that's probably because it flows better. Look it up.


Modified by Toroke at 6:37 AM 9/1/2006

 

those pistons will stick out of the block, so unless you can get really thick headgaskets, its not going to happen