Thats actually somewhat difficult to answer. When you buy the Hytech header, they build it based on what your goals for the car are (tailor made ) its not really an off the shelf piece (though I'm sure they will sell you one without the specifics on your build if you wanted).

It offers the same weight savings as the JDM makes, but is designed to work better with the other parts and goals you have for the car. None of the headers listed above can do that, because they are off the shelf products .

I cant show you dynos, because most of the people running them have other supporting mods (cams, cam gears, EMS, ITB's, or etc.)

If you go into the header thread in the JDM forum you can see pics and a dyno sheet or two

 

I will peep into the JDM forums.

I am trying to decide what header I may use if at all in the future. I am thinking header, exhaust, and hondata. Right now I am leaning more towards the Mugen since they make an AP2 specific piece. I still need to decide if I am going to do any future mods. I may not keep the car so I am still unsure. If I do this will be the next set of things I do.

Swiftoy

 

Just keep the OEM, save that money, and go FI.

 

 

Berk is good bang for buck.

 

Headers are not really worth it unless you get it tuned.