Anyone dyno an AP2 with this header? Is Aj-racing the only place you can get it? I have a VAFCII and I need to get it tuned but I don't want to spend $50 to have hole drilled in my berk pipe and an o2 bung welded in. So I could just put that $50 towards the j's, which I hear is the best for top end. Just wondering what kind of gains I would get on an Ap2.

 

Yes for that matter I have not heard which header is best for the F22 mill. I have heard as well that J's header is great. But was it designed for the F20 or F22, Does it matter? I would like to hear as well from those who actually own an AP2 and have a header...Sorry not trying to steal your thunder hereI think we both want the same thing.

 

mugen has a new header out, specifically built for the F22C.