Car : 97 Civic EX Coupe
Engine : JDM 97 B20B
ECU : 93 Integra PR4 Manual
No check engine light, all sensors are hooked up
Fuel Pressure : 45psi (no vacum line)

Idles fine when cold, but once it warms up it wont stay idle. We turned the idle screw all the way out and nothing changes. Anyone have any idea's what we can check next?

When running on a stock P30 (B16A) ecu, P72 (GSR) or even the stock EX ecu it idles fine doesnt drive well at all.

any help is appreciated.

-Graham

 

try a different ecu..one that you knows works. I had this similar problem for awhile...it turns out to be the ecu.