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      11-18-2012, 03:15 PM   #4
magic77
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Drives: 335i
Join Date: Apr 2009
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That is impressive sound I would look IMO to remove the mid section as well. Not sure on e92 but on e90 just after the mid box there is a pinch point. On mine removed the lot from cat/dpf there is a straight pipe to new custom back box. Sounds very nice as well not as deep as yours but with two small kids need it to be bit more quieter
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