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USDM VS JDM ECU's

Discussion in 'ECU's, Electronics, and Tuning' started by WannabeSI, Dec 25, 2002.

  1. WannabeSI

    WannabeSI Senior Member

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    I have a B16a obdII swap and I have the jdm ecu that came with it and a usdm obdII ecu from a 99-00 si what one is better? do you know the differences between them? Let me know Thanks!
     
  2. xj0hnx

    xj0hnx I wanna be sedated VIP

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    You could try plugging them in and seeing if there is any difference.In my old 86 si I switched to a edm ecu and it made a difference,so try it.
     
  3. pissedoffsol

    pissedoffsol RETIRED

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    run the 99 si ecu
    jdm ecus are speed limited to 113.
     
  4. ngq

    ngq Member

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    jdm ecu looks for higher ron (octane) than usdm ecu & 99 si is obd2b (last
    plug on ecu empty).
     
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