Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Internally modify OBDI computer for an OBDII car?

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Old Jul 22, 2002 | 11:33 PM
  #1  
Dan K's Avatar
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Post Internally modify OBDI computer for an OBDII car?

I want to swap my 97 Z over to OBDI and was wondering what I have to do in order to just put the OBDI computer in and not have to change anything. Anyone know?
I think the only thing I'd actually have to change is the knock sensor would have to be changed out to an OBDI sensor. Is there any way I can keep the OBDII sensor?
Is there anything else I'll have to change besides figuring out what to do with the knock sensor?
Old Jul 26, 2002 | 05:02 AM
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I just did a PCM swap in my 97 T/A and all I had to change was the knock sensor and the PCM it was very simple. I tried it with the OBD2 knock sensor and it's not pretty although I heard you can add a resistor or something I'm not quite sure.
Old Jul 26, 2002 | 05:12 PM
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Yeah, I'd like to keep my OBDII knock sensor so that I could swap the OBDII computer back in if I need to take it in for some warranty work.
This way I'm not swapping knock sensors all the time.
Old Aug 2, 2002 | 09:11 PM
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PCMFORLESS.com has modded OBD1 computers for the OBD2 cars that you do not have to change anything but the PCM. Programmed and shipped is $290 to your door. Your old pcm can be swapped right back in too.
Old Aug 3, 2002 | 09:12 AM
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Yeah, I know. I was looking for someone that knew how to modify the computer so that I could just do it.
But I e-mailed Bryan @ pcmforless and he's hooking me up with a really good deal on a modified computer with a stock program so that I can just do the modifications myself.
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