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S5 v6 cat rattle

Brashy Sep 1, 2018

  1. Brashy

    Brashy New Member


    Need a bit advice!!! I have a S5 V6 sportback with a remap with uprated pulley.. now the problem is my secondary cat is rattling like a twat!

    If I remove the secondary cat and put a straight through down pipe leaving the main cats in place what issues would occur i.e would I get an error on the dash or would I need another remap to suit!!

    All help appreciated

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