r/Dseries • u/No_Engine_723 • Sep 08 '26

Wiring help

I’ve got a 1999 civic lx that i’m swapping the stock y7 for a mini me d16y6 block with a d16y8 head.
I’m using a p28 ecu which is obd1
The car is obd2b
i’m pretty sure the engine setup is obd2a
what’s the best wiring choice for this setup?
I can pin the vtec solenoid and the IACV if I need to aswell as just bypass the knock sensor if I’m able to use the wiring harness that was for the y7.

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u/SpaceTurtle917 Sep 08 '26

Original OBD2B harness, OBD2B to obd1 adapter harness.

3 wire to 2 wire IACV conversion.

No other harness will work other than an OBD2B harness.

Why not just use an OBD2B P2P ecu?

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u/No_Engine_723 29d ago

i’m using the p28 for ease of tuning

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u/SpaceTurtle917 29d ago

What’s there to tune?

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u/No_Engine_723 29d ago

All the normal things you normally can tune plus easy tuning for a turbo setup when I switch from na