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Wanting to stay OBD2. F20B into 96 base.

 
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Old 11-02-2017, 08:49 AM
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Icon5 Wanting to stay OBD2. F20B into 96 base.

I've given up on making my idea for the F23 swap work, so I've started selling some stuff and I've almost got the money for an F20B and LSD swap. Now. I have a 96 model. It is OBD2. The F20B is OBD2. I've said this before, but I want to make it clear. I will not swap to OBD1. There is no one local to me that can tune decently. And I do not have time to drive a state away and drop my car off to be tuned. When I get the F20B, I want to run it on the stock PCB ECU. Stock is plenty fine for me. I want it to run exactly like it is. In order to make this happen, what do I have to do? I know the F20B uses an OBD1 dizzy with the crank sensor inside. My OBD2 F22A1 has it down by the crank. My F22 also doesn't have a knock sensor. The F20 comes from a RHD car, so the harness won't be correct for my car. At least that is my understanding. If you're comparing the harness from an H22A4, which is USDM OBD2 if I understand correctly, would it work for the F20? All sensors the same? I'll get whatever harness I need to make it work. I also will need an adapter to go from the OBD2B ECU to an OBD2A harness. I've also read I'd need to change injectors in the F20 since the car it comes in has no resistor box. So can someone enlighten me on what all needs to happen to make this work? I feel like it shouldn't be that hard since I'm OBD2 and the motor is OBD2. I just need to get another motor in this thing. My F22 has almost 300k on it and it's getting very tired. I want to swap it before it gives up and strands me. Thanks guys.
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Old 11-03-2017, 01:32 AM
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Re: Wanting to stay OBD2. F20B into 96 base.

you can run it with F20B JDM ecu but if you have to use any other ecu it wont work and you have to go OBD1
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Old 11-03-2017, 11:53 AM
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Re: Wanting to stay OBD2. F20B into 96 base.

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you can run it with F20B JDM ecu but if you have to use any other ecu it wont work and you have to go OBD1
Yes, that's the ECU I'm going to run. I want it to run just like a stock F20B should run. On its factory PCB ECU. What I'm asking is what all else is necessary. As far as adapter harnesses, the engine harness, the crank sensor stuff, injector stuff etc. That's all the stuff I need to know.
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Old 11-03-2017, 07:39 PM
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Re: Wanting to stay OBD2. F20B into 96 base.

OBD2A to OBD2B conversion harness.. if you run it with JDM ecu and JDM sensors...theres should be no problems.. except like IAT sensor has wrong plug but you can get the conversion plug from rosko racing

JDM vs USDM electrics wont match but with JDM ecu is more simple than trying to use it with USDM ecu

Im not expert in this but its more easy to get it work with JDM ecu than with USDM. Just go for it, sorry I cannot give you more solid answers
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Old 11-03-2017, 10:13 PM
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Re: Wanting to stay OBD2. F20B into 96 base.

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OBD2A to OBD2B conversion harness.. if you run it with JDM ecu and JDM sensors...theres should be no problems.. except like IAT sensor has wrong plug but you can get the conversion plug from rosko racing

JDM vs USDM electrics wont match but with JDM ecu is more simple than trying to use it with USDM ecu

Im not expert in this but its more easy to get it work with JDM ecu than with USDM. Just go for it, sorry I cannot give you more solid answers
No no, any help at all is appreciated. So far, this is what I THINK will work. The PCB ECU will be adapted to a USDM OBD2 H22A1/A4 engine harness. As far as I know, that will cover most of the sensors, and I can find/swap the ones not covered separately. I will swap for a USDM OBD2 oil pump. I will also need to get OBD2 H22 injectors. Now what I'm still kind of iffy about is the dizzy. I know there's a few different adapter harnesses to make some things work, but if I understand correctly, I have to send the signal from the oil pump mounted crank sensor up to the dizzy, since the F20B uses an OBD1 dizzy. Or I think I'm supposed to swap for an OBD2 dizzy and just plug the factory connector into the crank sensor in the OBD2 oil pump and just let the OBD2A>B adapter send the signal to the correct place in the ECU. Someone please correct me if I'm wrong. I just need to know what exactly I need to get and have as few things hold me up during the swap as possible.
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Old 11-08-2017, 09:10 AM
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Re: Wanting to stay OBD2. F20B into 96 base.

Anybody else have other info they can add that might help?
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