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]

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

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

 
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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.

 
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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.