ar5enal

Header options I know about for the 4th gen VTEC:

SMSP: not out yet. promises high gains (meet or exceed Mugen) but will probably cost the same, if not more.

Mugen: tried & true header. don't know if it will fit 4th gen without modification.

JUN: i know next to nothing about this header. supposedly, it has a true 2.5" collector.

Does anyone know more about the JUN header? Better yet, does anyone have one? Dyno numbers?

Joon525

I had one a while ago that I was holding for a friend. I didn't use it and obviously didn't dyno it but I'll tell you this much.......it looked almost EXACTLY like the Mugen header.

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CTPRELUDE

Is it close the the Mugen price?

ar5enal

I think it is pretty close to the price for the Mugen header (maybe a little less)

My main reason for considering it is the true 2.5" collector, and the fact that it will fit 4th gens with no modification.

Of course, I don't know if that's really the case. Does anyone have the Mugen header on a 4th gen?