i need some serious help quick, im looking for what pin number the IAB (intake air bypass) in my pr3 ecu is, and i need help with the 02 sensor wires. problem with the 02 sensor, pr3 has 2 02 sensors, 1 wire for each. now do i take both the wires from both the 02 sensors and connect them with the new 4 wire, and then connec tthe other 2 wires from the 4 wire 02 sensor with the conversion harness? sorry if i confus anyone

 

IAB? On a PR3? You must be confused. The B16 does not use that sensor,or you're using the wrong term.

For the o2 wire, you can either use the primary o2 wire...but the OBD1 conversion harness usually comes with its own o2 sub harness, so you won't have to use either of the old o2 wires. Plug it straight into the sensor.

 

PR3 does not look for the IAB. Only the P72 ecu has a pin for the IAB. Which PR3 are you using? OBD0 or OBD1???

 

obd0 pr3 right now, looking at the insttructions on the subharness it says i need to do somthing to the iab

 

You don't need to hook up that wire. Cap it off

 

If you have the iab system, ie gsr intake mani, you need to wire it on the wires in the 0-1 ecu subharness. Depending on the harness, you do it different ways.
Ryan

 

where is the iab located on a obd1 gsr?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18cEF9 &raquo;</TD></TR><TR><TD CLASS="quote">where is the iab located on a obd1 gsr?</TD></TR></TABLE>

The canister and plug for the IAB's is under the intake manifold, on the drivers side. Just look under the intake right behind the alternator.

 

what does the IAB do? anytihg special? could i run without it?

 

since you have a chipped p28, you dont need it

 

IAB's will restrict the intake quite a bit if you don't use them. My ECU doesn't support IAB either, and I'm running an apexi V-AFC2 to control the IAB's.

You could also hook them up to the vtec solenoid (not so favorable) or just hook them into the the power cirquit so they're stuck open all the time.