hyper em1

Jdm b18c into 00 si using jdm p72 ecu (OBD2A) with 00 si harness with OBD2B to OBD2A Jumper.

I am using the b18c intake manifold and trying to figure out the correct way to wire the IAB.

I see some people say to run the red/blue wire to the ecu and ground the yellow/black wire.

Others say to run the red/blue wire to the ecu and run the yellow/black wire to a 12+ source.

And as far as running the red/blue wire to the ecu, everyone says a different pin.

Does anyone have the correct information.

Thanks in advance.

e46civic

Yellow black goes to 12v switched, the other goes to ECU. Dont know which terminal off the top of my head. The IABs are normally open, car turns on solenoid closes, pulls vacuum, close throttles. You hit whatever RPM they open at, solenoid opens, loses vacuum, throttles open up.

hyper em1

are you sure the yellow/black doesnt get grounded?

e46civic

Yeah, considering black/yellow is a 12v switched wire (means there is no power when ignition is off). Look at the shock tower drivers side, run a wire from one of those. I used the jumper plug for the injectors, the one thats capped off. The Ecu provides ground or takes it away. If you ground black/yellow and hook up the other wire to the Ecu, the IABs will never close.