with this set up..which intake would provide the BEST over all performance, a STOCK GSR IM, Stock SI IM, or ported and polished SI IM:
2k EX Civic
95 B16A3
stage 2 port and polished head
Mugen 2ply head gasket
98 ITR tranny
Spoon Racing cams
Skunk 2 Racing valve springs
Skunk 2 ti. retainers
Skunk 2 adj cam gears
Unorthodox Underdrive crank pulley
Centerforce dual friction clutch
Comptech header
2 1/4in custom exhaust
Magnecor 8.5mm wires
P30ecu 5800rpm Vtec X-over 8600 rpm limit
short ram intake
Neuspeed Short throw shifter
(i think i got everything)

 

Out of the 3, I would go with the ported Si. The GSR is wayyyy too convoluted, and you would have to worry about controlling the IAB's. Or, just get the Skunk B16 IM or a stock ITR one.

 

GSR IM would give you more torque, but it will not fit on your head. I'd go P&P SI or Skunk2. With say 68-70 mm throttlebody.

Or some TWM ITBs. :yumyum:

 

the GSR intake will fit on an SI head...they are both b-series heads, and have the same bolt patterns....but anyhoot...decided to use the SI P/P IM, cause its better for midrange which is where the engine seems to lack the most

 

Uh, no.

There's a reason Skunk2 makes so much money selling manifolds, and that is that a Type-R IM will not fit on a b18c1 head.

 

a type r manifold will fit on a b18c1 head with a lot of custom work. but why go through all that trouble and money when getting a skunk2 manifold is easier and cheaper?

 

who mentioned anything about a B15c1 head...my friend has a b16a3 engine..block..etc.....so im confused as to where the worries about an ITR IM fitting a b18c1 is coming from....

 

Given that a b18c5 uses a b16 head, if a b18c5 intake manifold won't fit a b18c1, a b18c1 intake manifold will not fit your head.

 

ahh...gottcha...thanks for the info none the less