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 OBD I to OBD II 
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Joined: July 11 2010, 11:10 AM
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Location: Sunny California
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Post OBD I to OBD II
I know its a dumb question but could it be possible to change a 1 to a obd 2 like if i changed out the ECU or something, I know theres the jumper wire trick but i hate always explaining to mechanics how i figure my codes and alot of shops are loosing the OBD I check systems....

also i seen a cool little bluetooth OBD II thing and i would love to just log onto my CPU and see what code im throwing 8) instead if putting a paper clip in my car and counting flashing engine lights

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June 01 2012, 8:55 PM
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Location: Trenton ON.
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Post Re: OBD I to OBD II
OBD2 is a 4 plug where as OBD1 is a three. Easiest to do a harness change. I did an KLZE swap into an obd2 and it ran great.

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June 01 2012, 10:13 PM
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Post Re: OBD I to OBD II
cool! :mrgreen: so both are the same system but just the plugs are different like a USB A to USB B kinda thing

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June 02 2012, 3:08 AM
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Post Re: OBD I to OBD II
need a new harness and ecu. not worth it.


June 02 2012, 2:44 PM
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Post Re: OBD I to OBD II
hhmmm :?

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June 02 2012, 4:38 PM
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Post Re: OBD I to OBD II
RS_OBD'oh_2 wrote:
need a new harness and ecu. not worth it.


Your opinion of course. :D If you can pick up a harness cheap, ECU (I have one) and KL02 vaf (I have one) then it could be a consideration. My 96 OBD2 ZE ran great with no requirement for chipped ECU's or after market fuel management. Just your VRIS will be off but only one of them and I can't remember which one, lol. People are against OBD2 in our cars and other than the work to swap the harness I have no idea why,,,possibly from never driving an OBD2 controlled ZE.

viewtopic.php?f=46&t=65550&hilit=daninski

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2004 Subaru WRX Silver, stage 2, minty interior.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
Feedback viewtopic.php?f=37&t=66348" onclick="window.open(this.href);return false;
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I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.


June 03 2012, 12:09 PM
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