Maximum exhaust piping for H22a

[Baopham]

what is the maximum exhaust piping size for the H22A with out losing torque???
i am thinking of doing a h22a swap and where else to get info on it then in the prelude forums.. help me out guys.. thanks

[McChook]

2.25 to 2.5 should be fine
and...
http://www.preludeaustralia.com - plenty of conversion info there - just search

[Baopham]

thanx

[redliner]

if u get 2.5 u'll gain top end but lose bottom end
thats wat happened to me
i say 2.25

[Baopham]

with 2.25, do i still gain top end?

[azjs]

Depends on what else is done to your engine

-az

[flipmods]

I would go 2.25 and get the best of both, top and bottom end power assuming you car is not fully worked.

[WPN.22R]

2.25 is tops!! ive even been running my car with the turbo set up with 2.25 (soon to change), and it works really good, have you done any other mods to your engine... cos from the tests ive done with a open pod KnN filter and 2.25 exhaust.. i lost out about 500revs top end... with the standard box it revved all the way, but slightly yuk bottom end.

[ginganggooly]

the blokes in the states with serious mods to k20's and b20's are running 3" systems these days it seems. i'd imagine that a worked h22a would have a similar requirement being a 2.2l and all.

[McChook]

the blokes in the states with serious mods to k20's and b20's are running 3" systems these days it seems. i'd imagine that a worked h22a would have a similar requirement being a 2.2l and all.

I'd agree when it came to top end - but few H22s are making big power in Australia - and by big power, I gues I mean over 150fwkw... I think Elee (WPN.22R) should be going to 3", but with 2.25, it would be great down low, which is something you lose when you go turbo...

[WPN.22R]

yes most definately 3" my friend!!

[edw-R]

2.25" should be fine for street. If you always on the track, try 2.5". Good luck!!