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Thread: 2 cats or 4 cats?

  1. #1
    Registered User audirs6sport's Avatar
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    2 cats or 4 cats?

    Does the RS6 have 2 catalyic converters or 4 in stock form of course.
    93 RX-7
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  2. #2
    Registered User jim kelly's Avatar
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    Mine's got 1 more than standard (sorry couldn't resist).
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  3. #3
    Registered User quattro's Avatar
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    Love the humor


    Check this page. I think 4 cats (except Aussie cars)
    http://www.rs6.com/forum/showthread....=technical+pdf
    Light travels faster than sound. That's why some people appear bright until you hear them speak.

  4. #4
    Registered User bilbozilla's Avatar
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    Do I smell a cat-bypass fabrication in the works?

    Gotta love the government regulations. So, does the RS6 have 2 or 4 (or five, as seen above)
    Last edited by bilbozilla; January 12th, 2005 at 21:00.
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  5. #5
    Admin Erik's Avatar
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    The picture shows 4 cats
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  6. #6
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    4? May I object?

  7. #7
    Registered User audirs6sport's Avatar
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    THX! DAMN that DP sure do look "RESTRICTED!!!"
    93 RX-7
    2002 B6 A4 1.8T 6MT
    2002 B5 S4 2.7TT 6MT
    2003 C5 A6 2.7TT TIPTRONIC
    2003 G35 6MT
    2003 E46 M3 6MT
    2003 996TT 6MT X50
    2003 C5 RS6 Ebony Pearl/Silver Int.
    2003 2ND C5 RS6 Daytona Pearl/Ebony Int.
    2006 E46 BMW M3 SMG II

    Current:
    2007 B7 S4 6MT w/ EVERY option
    2008 C350 with EVERY option
    BMW M6 SMG III w/ EVERY option

    vehicle coming soon:
    2009 E93 M3 DCT

  8. #8
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    hairless way to go

    The RS6 has a set of 2 down pipes leading to the full cat back exhaust.
    Each down pipe has a set of pre-cats, and a set of cats. In conclusion, that would mean that for the RS6 to pass emissions, it needs 4 cats.

    Some folks have added a 5th cat which is good for another 15 horsepower. The 5th cat can come in many coats, for more or less restriction. For best performance, you can go with a mexican hairless cat.

    No hair, more aero-dynamic.

    PS: not sure what happened, but this was suppose to be a reply and not a new post. Bummer!

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