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OBD1 or OBD2

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    #1

    OBD1 or OBD2

    I have a 93 Ex which i plan on swapin an H in it but i don't know whether i should get a OBD1 or OBD2.
    Tags: None
    #2
    All Cb7's are OBD1. You could get an OBD2 H22 which is the A4 and A7 I believe. Swapping from OBD1 to OBD2 is not easy. The best H22 to swap in would be the H22a, it's OBD1.

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      #3
      How much trouble you wanna go through. Obviously obd1 is easier and there really isnt much difference.

      The New-ish Ride
      My old Ride
      Hear my Vtak!!!
      MK3 Member #3
      I piss off people for fun.
      IA 08 Sunburn Victim #1

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        #4
        i always thought obd1 ,obd2 had to do w ecu and emissions and that if you went obd2 it was easier to pass your inspection is taht right

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          #5
          ya get the obd1 it will be a lot easier, since you dont have to convert a obd2 to a obd1 like i have to do when i start my swap.

          My s13 Ride Thread>>><<<My Rx7 Ride Thread "What is power without control?"
          New people click here

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            #6
            Correct me if I am wrong, but i believe the only difference between obd1 and obd2 is the position of the o2 sensors. one before and one after the cat for obd2 and only one before the cat for obd1.

            Im not very familiar with EFI yet (I'm an old Datsun guy so side draft carbs are my specialty ) but That is how it was explained to me.

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              #7
              Originally posted by dean_harryman
              Correct me if I am wrong, but i believe the only difference between obd1 and obd2 is the position of the o2 sensors. one before and one after the cat for obd2 and only one before the cat for obd1.

              Im not very familiar with EFI yet (I'm an old Datsun guy so side draft carbs are my specialty ) but That is how it was explained to me.
              no, there is some other differences like you have to get an obd1 distributor, and a obd2 to obd1 conversion harness to make life easier lol. and there is some other stuff you have to do.

              My s13 Ride Thread>>><<<My Rx7 Ride Thread "What is power without control?"
              New people click here

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                #8
                Converting isn't hard... just another step, and a little more to learn. OBD1 is easier, OBD2 is newer. OBD1 H22s are closed deck, and I believe most OBD2 H22s are open deck (closed is stronger... 1996 may still have the closed deck design, but the H22A4 was open deck)






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