mdixonjam

I have a 95 Integra with a which has a LS block and B16A head and the car was running fine except that the Rocker Arms were causing extremely loud ticking noises, so we decided to change them.

A friend got me a great deal on a Type-R Head so we decided to make that swap instead. I also got the Type-R intake manifold and Throttle Body installed at the same time.

Problem: the car pulls weaker with the new setup in the lower RPM band, when VTEC comes in it pulls okay.

Any ideas as to what the problem could be ?

Let me give you the full performance specs on the car:

LS/VTEC frankenstein motor setup (B18B Block with Integra Type-R Head).
JDM Integra Type-R Intake and Exhaust Cams
PR3 Pistons (~ 11.4 : 1 CR)
JDM Integra Type-R Intake Manifold
JDM Integra Type-R Throttle Body
OBX 5 point Adjustable Cam Gears
AEM High Flow Fuel Rail
MSD 274cc Injectors
B & M Fuel Pressure Regulator
DC Sports Header
Upgraded exhaust pipes - 2 1/4"
RS Stainless Steel Freeflow muffler
A.C.T. Streetlite flywheel
Exedy Racing Clutch Kit
MSD Blaster II Coil
Short RAM Intake w/ Arospeed filter (Type-R AEM Cold Air Intake on it's way)
PR3 ECU (not yet chipped)

Any help would be greatly appreciated !
Thanks

pills_PMD

the cam gears aren't tuned more than likely.
what are they set at?

pills_PMD

and the more i look at it.. i'm guessing your fuel pressure is probably way off. the ECU you are using isn't fit for the motor at all... you need some dyno time and hondata/uberdata/crome/vafc some kind of fuel adjustment.

td-civ

you need a better ecu and you need to run a afc the head you put on flows way more then the b16 one more air you need more fuel