i had a b16 w/ skunk2 type R manifold i only noticed on the dyno about 8 hp. i did not notice any "seat of the pants" type deal. i have done alot of ghetto home ports on some honda and acuras, and have noticed slightly less gains, call extrude hone or bullfrog.
__________________
.
10.02@149.5 Bullseye Power Turbos
Top Dead Center Performance
Mobile Alabama 251 661 6067
owner/operator
www.tdcperformance.net