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Thread: Data Logging

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    Here for the party Not Verified Feedback Score 1 (100%) CoreyB's Avatar
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    Data Logging

    Have a question on data logging a 94 TT ECU in a 91 TT car. The ECU works just fine, I made one modification to the harness in order for it to work. It was just one wire that I moved for the ignition signal IIRC. My question is how I should log with it. 94 ECUs are hybrid and use the OBDII style connector. My car has the OBDI connector. Can I just connect to the OBDI connector the same as if the ECU was a 91 or do I need to modify something ?

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    Forum User verified Feedback Score 0 HLxDrummer's Avatar
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    No, you will need a hybrid logger since the ECU is hybrid. I'm 95% sure.

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    Here for the party Not Verified Feedback Score 1 (100%) CoreyB's Avatar
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    Thats what I figured. What I am curios about is the cable. I still have the OBDI diagnostics port. Do you know if I use the same pins as I would for the 91 or are they different or do I need to make some wiring mods ?

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    Member verified Feedback Score 0 DocWalt's Avatar
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    Hybrid's use an OBDII shaped plug.
    R135
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    - 24

  5. #5
    Here for the party Not Verified Feedback Score 1 (100%) CoreyB's Avatar
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    Yeah thats my issue. I have a 94 ECU in a 91 VR4 with the 91 VR4 harness. I am reading Gatecrashers $7 hybrid cable thread on 3si, maybe he can shed some light on how I can use my OBDI plug to pull the info from the 94 ECU.

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