'02 pcm in a '99?
06-14-2007, 02:22 PM
#2
Wow, there's a thread right below yours with the exact same question:
https://ls1tech.com/forums/pcm-diagnostics-tuning/731373-swap-not-swap-98pcm-99-a.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/731373-swap-not-swap-98pcm-99-a.html
06-14-2007, 03:23 PM
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Correct. But the operating system and calibrations are different. If you have a stock '99 and throw in a stock '02 PCM with a stock '02 tune, it'll run. But, it won't run as well. Take for example the timing map - on the '99 it's way different.
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06-14-2007, 03:26 PM
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Originally Posted by Beaflag VonRathburg
Wow, there's a thread right below yours with the exact same question:
https://ls1tech.com/forums/showthread.php?t=731373
https://ls1tech.com/forums/showthread.php?t=731373
06-14-2007, 03:29 PM
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ok so basically they are the same pcms with different part numbers. what changes is the
operating system and calibrations? so if if get my hands on a 99-02 and changed the settings to work with my vehicle, I will have no issues? what I am trying to do is avoid down time on my car
operating system and calibrations? so if if get my hands on a 99-02 and changed the settings to work with my vehicle, I will have no issues? what I am trying to do is avoid down time on my car
06-14-2007, 03:41 PM
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Originally Posted by Mia
ok so basically they are the same pcms with different part numbers. what changes is the
operating system and calibrations? so if if get my hands on a 99-02 and changed the settings to work with my vehicle, I will have no issues? what I am trying to do is avoid down time on my car
operating system and calibrations? so if if get my hands on a 99-02 and changed the settings to work with my vehicle, I will have no issues? what I am trying to do is avoid down time on my car
06-14-2007, 04:02 PM
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Do not flash a 00-03 cal into a 99 pcm. the adress offsets are a wee bit different.
However a 02 pcm is a drop in using o2 code.
However a 02 pcm is a drop in using o2 code.
Originally Posted by SSpdDmon
It should be fine. You just need to have the '99 calibration flashed into the '02 PCM.
06-14-2007, 05:27 PM
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Originally Posted by LS1curious
Do not flash a 00-03 cal into a 99 pcm. the adress offsets are a wee bit different.
However a 02 pcm is a drop in using o2 code.
However a 02 pcm is a drop in using o2 code.
Why not? There are people running '02 OS's in '99 and '00 cars without trouble as far as I know.
My friend's '99 had the same factory OS as my other friend's '00, just minor differences in the calibrations. Why isn't this a problem?
We're both talking a full flash here, right? Not just cal's...
Last edited by SSpdDmon; 06-14-2007 at 07:15 PM.
06-14-2007, 05:48 PM
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Originally Posted by SSpdDmon
What's wrong with your PCM now?
06-14-2007, 06:20 PM
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What modifications do you currently have? Your Crank Position data will be different than the "new" 02 pcm's. You may or may not set a code for it-which you'll have to have someone perfrom a CPRelearn. Your VIN data will also not match up. Your best hope for no problems would be if the "new" 02 pcm has the same trans, hardtop/VERT, F or Y body as your original. You still stand a strong chance of running into the CPR problem. Some of the big sponsors now have little boxes that they can ship out to you so you can reflash a new Operating system and calibration rather than you having to send in your pcm and effectively down your car. I hope that is what you are trying to get at.
