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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

OBD 1 switch

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Old Mar 19, 2010 | 01:38 AM
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Default OBD 1 switch
Can a OBD1 be switched to a OBD2? If so please feel free to chime in. The more info the better. I need to know everything.
Last edited by stburgpete; Mar 19, 2010 at 12:06 PM.
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Old Mar 19, 2010 | 01:43 AM
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Why do you want to switch it?

Most people swap OBDII to OBDI.
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Old Mar 19, 2010 | 04:22 AM
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Lol @ this
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Old Mar 19, 2010 | 06:50 AM
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Yes, it can be done...
  • install 96-97 timing cover
  • install 4x crank reluctor and sensor
  • install 96-97 crank hub
  • install 95-97 optispark
  • install 95-97 camshaft so that you can drive the optispark
  • add OBDII data stream wire to PCM and route to OBDII diagnostic port

That's an overview anyway. The OBDI and OBDII harnesses are nearly identical at the PCM.
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Old Mar 19, 2010 | 11:38 AM
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Originally Posted by the_merv
Why do you want to switch it?

Most people swap OBDII to OBDI.
pcm if free and I do not have to by the program to toon someone already has the tooner and a spair pcm. He offered this to me and asked me to get a write up on it if I could if possable.
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Old Mar 19, 2010 | 11:40 AM
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Originally Posted by stburgpete
pcm if free and I do not have to by the program to toon someone already has the tooner and a spair pcm. He offered this to me and asked me to get a write up on it if I could if possable.
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Old Mar 19, 2010 | 11:41 AM
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Originally Posted by MTBSully
Is it that bad to do?
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Old Mar 19, 2010 | 11:41 AM
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have you taken any kind of english courses in your life?
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Old Mar 19, 2010 | 11:43 AM
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you misspelled

"is"
"buy"
"tune"
"tuner"
"spare"
"possible"

also, you still have not explained why you would want to convert from obd-1 to obd-2
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Old Mar 19, 2010 | 11:50 AM
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Originally Posted by MTBSully
you misspelled

"is"
"buy"
"tune"
"tuner"
"spare"
"possible"

also, you still have not explained why you would want to convert from obd-1 to obd-2
My bad just trying to see witch is cheaper buy, toon program and cable or switch. Didn't know I was being graded on spelling.
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Old Mar 19, 2010 | 11:56 AM
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trust me. around here, spelling is kind of a big deal. and for the love of god its TUNE not toon.
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Old Mar 19, 2010 | 12:05 PM
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Originally Posted by MTBSully
trust me. around here, spelling is kind of a big deal. and for the love of god its TUNE not toon.
I will pay attention to my spelling more. So how much of a pain is this switch? Long night last night sorry.
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Old Mar 19, 2010 | 12:08 PM
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like listed above, you would need to buy all of those parts. Also like has been said, OBD-1 is much easier to tune than obd-2.
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Old Mar 19, 2010 | 12:15 PM
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The only thing worth going to OBDII is using the LS Coils and PCM..
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Old Mar 19, 2010 | 08:15 PM
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OBD-I software is cheap or FREE
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