5zigen header, please give me advice!

[gtimax]

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I heard a honda fans said 5zigen 421 header is too big for b18c, not enough back pressure for street daily use, is it true?
I will take a 2nd hand tomorrow, please give me advice, otherwise withdraw it.
thanks a lot guys!

 

[BrutalB83]

I don't know where you heard that, but it should be fine. It doesn't look like a race header to me...

 

[gtimax]

thanks ! I took it today, it looks great, will test it soon!

 

[gtimax]

tested today, it feels great!
enough torque(even air cond on), very good power extent from 6000-7000rpm,
excellent header and very good price!

 

[95b16coupe]

your ass dyno is broken. you're not going to feel a difference from that header.