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mod exhaust
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  1. E36 (1991 - 1999)
    I have a 1992 325I E36 COUPE, need a few more ideas of what mods to make, have a few in mind.
  2. E46 (1999 - 2006)
    I am looking to replace the exhaust from the downtubes back with a very free flowing setup and was wondering if anyone has had experience with any side effects doing this type of thing. Specially, will this throw any error codes regarding the secondary O2 sensors? Thanks.
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