check out what this guy had to say about the mugen and spoon headers
http://pages.quicksilver.net.nz/vivisect/P...eader/index.htm

just a highlight: Impressions:
Surprisingly, there is noticeably more power down in the low power range, and it seems the same at midrange, but high end, from 7-9rpm, the car really pulls. Hopefully I will able to overlay the before and after dyno figures for the Spoon Header soon. I am going to dyno the car, and then tune with a VAFC later on.

I feel almost no VTEC surge anymore (which may be a blessing in disguise when accelerating below and through VTEC during a sharp turn - don't try it on a crowded street), just a very linear acceleration feel. Street driving below VTEC is much more enjoyable too. Hurrah!



[b] i do value your opinion more, as you seem confident and say that you dynoed them as well.