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Standard cat-back any good?

H17YD L May 23, 2013

  1. H17YD L

    H17YD L Active Member

    I'm getting a downpipe and de-cat fitted, just wondered if the cat-back is restrictive at all? Most cars I've had didn't benefit from a cat back the downpipe and cats were the main problems?
    Is the S3 the same?

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