3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
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ok so my cat has a hole, and its old. Everyonce in a while it(the CAT) starts to smell. I heard that changing a CAT will help with performance..since the old one is all gunked up and shit....this true?
i personaly just changed my cat on my 325 and i could notices the diffrence in better perofmance when i got it back bcaues of the pressuer being lost from the hole in it. oo=[][]=oo
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