Thinking of upgrading exhaust!
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This is a discussion on Thinking of upgrading exhaust! within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; Just wanted to know if the stock downpipe outlet was 2.5 or 3.0? Thinking of buying a BPM MKIII and ...

  1. #1
    Registered User
    Join Date
    May 2006

    Thinking of upgrading exhaust!

    Just wanted to know if the stock downpipe outlet was 2.5 or 3.0? Thinking of buying a BPM MKIII and wanted to know if it would bolt to the stock downpipe? Thanks

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  3. #2
    Registered User wRxOne's Avatar
    Join Date
    May 2002
    Vallejo, CA
    I think the stock is a 2" but you should ask BPM if their catback will fit a stock downpipe flange. I have the HKS and it fits the stock. On a side note though, the WRX catback is pretty free flowing and tha main restriction is in the downpipe with the cats. Getting a downpipe would be more of a power advantage than getting a catback.
    Chuck Norris' tears cure cancer. Too bad he has never cried.

  4. #3
    Registered User
    Join Date
    Jun 2005
    I thought it was 2.25"

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