swapping 96lt1 into 305tpi car harness question

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Feb 12, 2004 | 01:52 PM
  #1  
I have a 96LT1 engine, and a 89gta 305tpi..
I have been told to get either a 94 or 95 computer, as these are obd1 and 96 is obd2, ie more money to program.. I would like to get 94 gear because i can get a hypertech for cheap..

Will I run into any problems with connectors or sensors if I use a 94 harness with the 94 computer with a 96lt1? Or should I just get a 96 harness?

Thanks.
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Feb 12, 2004 | 07:54 PM
  #2  
Don't get hypertech, those are pretty much worthless.
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Feb 13, 2004 | 11:54 AM
  #3  
Re: swapping 96lt1 into 305tpi car harness question
Quote:
Originally posted by Thirim
I have a 96LT1 engine, and a 89gta 305tpi..
I have been told to get either a 94 or 95 computer, as these are obd1 and 96 is obd2, ie more money to program.. I would like to get 94 gear because i can get a hypertech for cheap..

Will I run into any problems with connectors or sensors if I use a 94 harness with the 94 computer with a 96lt1? Or should I just get a 96 harness?

Thanks.
You will be able to use your 96 harness, theres a slight difference, but the obdII to obdI conversion isnt that uncommon, do a search on www.camaroz28.com and you should be able to find it
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Feb 13, 2004 | 02:25 PM
  #4  
Yea, actually, I think all it involves in the conversion is removing the rear 02 sensors and removing a wire from the ecm. I read it before but don't remember the specifics.
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Feb 13, 2004 | 04:46 PM
  #5  
i don't have a harness yet.. I was wondering if i should just get a 94 harness or get the 96 harness?
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Feb 15, 2004 | 08:18 PM
  #6  
Quote:
Originally posted by pasky
Yea, actually, I think all it involves in the conversion is removing the rear 02 sensors and removing a wire from the ecm. I read it before but don't remember the specifics.




The conversion involves knock sensor wiring as the 96-97 PCM I believe has two knock sensor inputs and the 94-95 PCM has one. The knock sensors are different PN's too.. That's all I can remember top-o-my head.
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Feb 15, 2004 | 08:20 PM
  #7  
Quote:
Originally posted by Thirim
i don't have a harness yet.. I was wondering if i should just get a 94 harness or get the 96 harness?
shouldn't be terrible to make the 96 harness work w/ the 94-95 PCM so if it's a lot cheaper, use it. If they're similar $, get the 94.

g'luck w/ your swap.

-Matthew
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Feb 16, 2004 | 05:34 PM
  #8  
thanks.. I think I have this part figured out.. Now I'm shopping for the cheapest harness
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Feb 16, 2004 | 07:26 PM
  #9  
I would never buy a Street & Performance or Painless harness.

The reduced quantity of higher amperage fuses is a bane to troubleshooting. There's a reason you have several fuses in an OEM injection system and cutting the # down to a few which are higher amperage is not helpful to the system in any way, shape, or form.

Last I checked, Howell harnesses were properly fused; the owner once worked for GM I believe. But they may have gone the cheapass route at some point recently.

If you are in doubt, get an OEM harness. That's the only way to fly to assure you're getting one that's "right."
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Feb 17, 2004 | 06:59 PM
  #10  
when i said cheapest harness.. by far it wasn't painless... I am shopping for a good used harness

btw.. anyone have one??
im in the wtd ads..



thanks.
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