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Don't wanna make any assumptions so...

Discussion in 'Electronics' started by underscore, Apr 23, 2007.

  1. underscore

    underscore Well-Known Member

    With the JDM ECU I'll need to use all the JDM sensors correct? or are some interchangeable with the USDM ones? I know a few are pretty rough looking on my new engine so I'm tihnking I should swap all of them and use my old ECU if running a mix will cause problems
  2. Mafix

    Mafix Owner Staff Member Administrator Donated!

    depends on which harness as well, some are, some aren't, some you won't find...
  3. underscore

    underscore Well-Known Member

    I'm using my USDM harness, the JDM one was chopped right where it comes out from under the intake manifold. So if it plugs in it should work?
  4. malodin

    malodin Well-Known Member

    back when i was going to do a 3sge conversion and located my jdm one, jeremy had said the jdm ecu plugs right into the usdm harness(as far as i remember)
  5. 1fstgts

    1fstgts Well-Known Member Staff Member Administrator Moderator Donated!

    Just from experience...The JDM 3sge I had. I ended swapping out the the TPS and AFM, they totally different part numbers than the USDM ones. Once I did that everything fired up. I was using the USDM ECU however. So I would assume that those sensors are different. But I cant tell you for sure.
  6. underscore

    underscore Well-Known Member

    yeah the plugs for the ECU are the same IIRC. If the JDM ECU requires the matching TPS and AFM I'm hooped cause I have the TPS but not the AFM, just my USDM AFM. I know I could just try it and see but I'd rather not be do too much muddling around once she's in the car.
  7. 1fstgts

    1fstgts Well-Known Member Staff Member Administrator Moderator Donated!

    It will idle erractically...Thats how I stumbled upon the different sensors. I first changed the afm....then figured out the TPS was different.
  8. underscore

    underscore Well-Known Member

    so I may as well go USDM ECU and sensors? Haha I'm basically using a JDM block and intake with USDM everything else.
  9. JoeJack88

    JoeJack88 Well-Known Member Super Moderator Donated!

    yep...easier in the long run ...if you end up breaking something.

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