Mekk82

Hey guys, So I have a converted to 0bd1 EF running a P28, standard jumper harness to plug my obd0 plugs into.

I've been reading up on wiring up VTEC, and the IAB butterfly valves.

I am frankly confused at this point.

To my knowledge the P28 was burned with a map that doesn't utilize and 02 sensor.

Secondly, from reading, 0bd1 P28's don't run a knock sensor? (Please confirm this for me)

With those two variables essentially out of the mix, as per this pic:



Do I simply ignore the 02 and knock pinouts altogether and simply add a wire to A17? This wire on A17 supposedly runs back to the IAB valve plug, and on my car there are two wires.. red/white, and green/white.. I am not sure which of these the A17 should splice to?

Lastly, as per VTEC, with the above information I only have to pin into jumper wires on A4 and D6? (If there are wires already in those pins I assume I would just splice into these existing wires?)

Sorry for the long winded post.. Just trying to sort through this confusion.

HondaPartsHero

Here's the wiring for VTEC, ignore knock and Iab as the p28 doesn't use it, also if the ecu chipped out the 02 I guess you can ignore it too

Mekk82

Thanks! the B18c will run properly without the IAB engaging? I also believe I have the EVAP canister as well to wire up.

Just want to make sure before I dig in and make anymore mistakes.

HondaPartsHero

You can run the evap if you want but it won't throw a code. With the IABs most people run a skunk 2 type manifold and eliminate them altogether. Otherwise they stay open all the time and you'll lose some low end torque.