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ls1 ecm swap

This is a discussion on ls1 ecm swap within the Computer & Tuning forums, part of the LSx Technical Help Section category; i have a '98 auto, i know the ecms are different and not as tune-able as 99+ models, also plan ...

  1. #1
    Senior Member justinmc978's Avatar
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    sold: 1999 firebird
    1998 Trans Am

    ls1 ecm swap

    i have a '98 auto, i know the ecms are different and not as tune-able as 99+ models, also plan on maybe eliminating egr and such. can i just get a newer model ecm, maybe get it tuned and swap it? thanks ya'll, sorry if this is a repost..didnt see another one like it

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    Senior Member bills98ta's Avatar
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    1998 Trans Am

    The wiring harness has a different pin-out too. So, you will need that too.

  3. #3
    Senior Member justinmc978's Avatar
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    sold: 1999 firebird
    1998 Trans Am



    the wiring harness to just the motor or to all the electronics too? would it be better to just buy another t/a to mod?

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    Not sure what you mean by not as tune-able as 99+? Just get a tune.

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    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    I have a 98.....heads/cam and stalled. None of the emissions hooked up running speed density. No reason you shouldn't be able to get your 98 tuned.

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    Senior Member 00z28bubba's Avatar
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    Quote Originally Posted by 0rion View Post
    I have a 98.....heads/cam and stalled. None of the emissions hooked up running speed density. No reason you shouldn't be able to get your 98 tuned.
    +1. they are all pretty much accessible to the guys here in vegas

  7. #7
    Senior Member bills98ta's Avatar
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    99 and up do have a wider range of tuning, but I'm happy with my 98 & HP Tuners !!!

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