Sim for header?!?!??!
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.
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Honda Civic Forum
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