Originally posted by dptkfil
I have to disagree on the turbo part...With proper tuning a lude can handle 10 psi and with just a lower compression head gasket and proper fuel managment, you can boost to 12 psi and reach 240 hp. (of course you don't boost 12psi and expect your engine to last) On the other hand the b18c5, the compression of the engine is a bit higher then h22, and it can't take that much boost.. I haven't see anyone boost more then 8 psi on stock internal...
with proper tuning, yes.......reliability suffers from every lb of pressure that it goes up......and i've seen 220whp from 7psi, so 12psi isn't necessary.......tuning it well means tuning it lean and supposedly more power and a more stable setup.....giving it a richer a/f ratio to compensate for less ideal tuning is a trick instead of a fix....and the jdm h22a has 10.6:1 CR which isn't really that much more turbo friendly than is the b18cX
here is a link of 240 whp at 7psi on a 99 lude
http://www.h22a.org/t0347psi.htm