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HELP! DPFI to MPFI for b18a1 swap!

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Old 02-12-2003, 06:19 PM
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Default HELP! DPFI to MPFI for b18a1 swap!

OMG!!! I have tried to find out how to do this!!! I have seen every kind of chart and still am stumped on the distributer wiring.. I got everything else done....like Fuel injector wiring and injector resistor wiring but can anyone please tell me:

What wires on the b18a1 OBD0 distributor Pin too on the PR4 OBD0 LS ECU???
I want too run all the wires on the distributer plug separatly to the ECU... SOMEONE HELP PLEASE!!!
Old 02-12-2003, 06:40 PM
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Default Re: HELP! DPFI to MPFI for b18a1 swap! (HybriDNA)

I want too run all the wires on the distributer plug separatly to the ECU...
There's no need to do that, you're only making more work for yourself. You only need to run the 2 extra wires from the ECU to the distributor. Connect the blue/green wire on cylinder position sensor C1 and then the blue/yellow wire on cylinder position sensor to C2 on the ECU.
If you don't have the large round distributor plug from the engine harness side of a MPFI harness, you can repin the B18A distributor with the square DX plug. The two remain wires on the distributor are the ones you will need to connect to C1 and C2 like I stated above.
Old 02-12-2003, 07:28 PM
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Default Re: HELP! DPFI to MPFI for b18a1 swap! (VTECVillain)

I didn't state that i was using a 89 HF wiring harness (same year as my car) so would it be the same as if i had a DX wiring harness?
Old 02-13-2003, 03:56 AM
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Default Re: HELP! DPFI to MPFI for b18a1 swap! (HybriDNA)

You can't use a MPFI HF or Si engine harness in a DPFI car. The plugs are different where the clip together at the shocker towers. You need to use your DX DPFI harness and rewire it to MPFI.
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