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Thread: Signum 3.0 V6 (facelift) - to cat or not to cat

  1. #1
    New Member phase3uk's Avatar
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    Default Signum 3.0 V6 (facelift) - to cat or not to cat

    Hi


    Opinions please. I'm looking at getting another Longlife custom exhaust for my latest Signum (57 plate 3.0 CDTI Elite) and can spec one of the following so I'd appreciate people's thoughts/experiences please:
    1. Cat back system (as I've previously had, good gain and sound)
    2. Full system with sports cat (more expensive but apparant better flow with a sports cat)
    3. As it's a diesel then can remove cat entirely and have complete system (never had a cat removed so no experience)
    Any advice would be welcomed.

    DJ

    PS. Is there any details anywhere for doing an airbox mod on this model or do I just stick with the current K&N filter as it is?

  2. #2
    Full Member Big Sig's Avatar
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    You also have a diesel particulate filter in there, so with out mapping that out you are a bit stuck.
    Now I need a turbo to keep up!

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    New Member phase3uk's Avatar
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    Quote Originally Posted by Big Sig View Post
    You also have a diesel particulate filter in there, so with out mapping that out you are a bit stuck.
    Hmm, looks like I may just go with the cat back system then as I'm starting to realise that remapping the V6 diesel isn't a wise choice (?)

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