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Thread: 3.2 gsi exhaust

  1. #1
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    Nov 2019
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    Vehicle InfoStats

    Vehicle : Vectra

    Trim : Gsi

    Engine : 3.2

    Year : 2004

    Default 3.2 gsi exhaust

    My exhaust is a bit of a mix match and not in good health, my zorst from the front of the cat is 21/4 inch, mid section is 2inch,and the rear y piece and back box pipe is 1 3/4 it's really restricted, I'm looking at getting a full stainless system soon but not knowing the best way to get the sound out without being too drowny, a guy said to do a decat and small centre box, but remove rear silencers and just have nice ovals coming out, another exhaust guy says completely de cat and centre section removal and have 2 14inch back boxer's with the ovals, anyone know what's the best way to get the sound of the v6 flowing as it should, without the drown in the cabin

  2. #2
    Regular Member nikroc's Avatar
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    Nov 2007
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    Vehicle InfoStats

    Vehicle : 2t

    Trim : standard

    Engine : z20net

    Year : 08

    Mileage : 32000


    Go get a custom exhaust made..when I did,on my 2t,I went back and added an extra box due to noise/droning.FYI it cost me the same price,for a cat back system as the price of one back box!..

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