Quote Originally Posted by jbhondatech
I own a 2000 si that does not seem to be making the power that it should and I am posting this to hear some ideas.

B16
9lb flywheel
ctr pistons
arp rod bolts
micro-polished crank
rotating assymbly ballanced to 11k
supertech in and ex valves
supertech valvesprings
skunk2 pro1 cams
skunk2 pro gears
port-matched intake and exhaust
ported itr intake manifold
AEM short ram intake
port matched DC jdm 4-1 header
2.5" test pipe
DC exhaust
Apexi power FC
4.78 final drive
cam gears dialed in on dyno
itr lsd

Midrange power is outstanding but once you get to 8200 rpm the power peaks at 168 and flattens out and drops off past 9500.
The torque is flat all the way across at 107
The A/Fs stay between 12.5 and 13.0

The useable power is awsome but the peak is far below what it should be
incadently I threw in a set of skunk2 stage 1 cams and the stock ecu and made 155 at 8100 but lost 20 to 30 in the midrange.

any ideas would be greatly appreciated
I'd almost say sell the block complete as it is and pick up a 1.8 and do a similiar build to it, then intake and exhaust as Mr. Kidd adviced. I've had a few people with relatively built B16's drive my car (b18c5 dc2) and be really dissapointed with the $2,500 or so they spent on building theirs up...they can't believe the torque differance. I'm sure with your existing head on top of a little more displacement you'll have the gains you're looking for.