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Remove Cats & rear O2's

This is a discussion on Remove Cats & rear O2's within the External Engine - 5th Gen forums, part of the 5th Generation Chevrolet Camaro 2010 - 2015 category; My ride is a '35 Buick street rod with a 1999 LS1. I plan to remove the Cats & rear ...

  1. #1
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    1935 Buick (Street Rod)

    Cool Remove Cats & rear O2's

    My ride is a '35 Buick street rod with a 1999 LS1. I plan to remove the Cats & rear O2's. What is the down side of not programming out the O2's, just leaving them disconnected?

  2. #2
    Super Moderator pajeff02's Avatar
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    '02 WS.6 / '07 Suburban

    If you wire up a check engine light it'll stay on all the time unless you tune out the codes. Codes for the rear O2's can easily be tuned out for around $150. Highly recommend "Tuned by Frost" for a mail order tune on your PCM. The engine and trans (if you are running an e-trans) will be much happier with his tweaks.

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