Should I go catless dp??
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This is a discussion on Should I go catless dp?? within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; I'm looking at downpipes and and have noticed that catless are substantially cheaper. Anyone have any suggestion, comment, or information ...

  1. #1
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    Should I go catless dp??

    I'm looking at downpipes and and have noticed that catless are substantially cheaper. Anyone have any suggestion, comment, or information about catless dps? My main concern is how will this affect my car will my check engine light be on or anything like that. Thanks for all of your help!

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    Master Baiter EJ257's Avatar
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    Proper tuning will disable any CELs, which should be done.

    Some 2.5Ls have had issues with boost creep using a catless DP. Some cars creep, some cars don't; you won't know until you try. A catted downpipe sometimes helps, but not always.
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  4. #3
    Registered User 2002_wagon's Avatar
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    IMO yes go for it and keep the stock dp in your garage
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    Quote Originally Posted by EJ257 View Post
    Proper tuning will disable any CELs, which should be done.

    Some 2.5Ls have had issues with boost creep using a catless DP. Some cars creep, some cars don't; you won't know until you try. A catted downpipe sometimes helps, but not always.
    ^^ yes thats what ive been reading also. I was thinking of going stage 2 catless because the DP is half the price of a catted one but after reading about boost creeps even after a pro tune I rather stick with the catted DP's just for that extra back pressure to prevent boost creeps on my daily drives.

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