turbo manifold???

[ZeForce]

Here's the manifold I picked up off ebay for my B20VTEC..... 321 steel with 3mm thick walls and 1yr warranty

[Limbo]

for boosted, the 3" will always make more power up top. Its underboost that's the problem. It will feel really laggy under boost.
FI always improves with better breathing

will you make 2.5inch exhaust will more or less power than a 3"

at 7psi

and 15psi