Pir8pete

So if Hp racing needs a Simulator then what about the APC 4-1 and the nuespeed etc...[IMG]i/expressions/face-icon-small-frown.gif[/IMG]

Macko

First I just wanna know what the hell is a simulator ?

[IMG]i/expressions/face-icon-small-confused.gif[/IMG]

Desi

i think its a o2 simulator to fool our o2 sensor. i think that's it but i'm not positive.

bo0sT

i doubt it because those headers should be carb exempt.. the Hp header is not. If you look at the cat that comes with it it's pratically a hollow pipe. You shouldn't have the same problems with neuspeed.. and i highly recommend NOT buying a header from APC.. use those people for tail lights and other accesories.

MyCivic

iTrader: (-1)

DUDE!! Leave APC alone, I got them and are fine. Fit perfectly. Except I did not do the cat bypass. But the header itself is good. Everyoane Biatches bot theAPC headers with no grounds to do so, if my headers DO get messed up I will let u know but as far as now I did not meet a single person with APC headers problems.