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      09-03-2011, 04:10 AM   #1
fatjoez
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Question Quiet Quad Exhaust??

Hey there

Has anyone had an exhaust/muffler shop custom weld a secondary pipe to the stock 135i muffler to make a quad exhaust?

I'd like to do this but wanted to see if anyones done it before to get their thoughts on it.
I'm trying to keep the volume/sound as close to stock as possible
Another reason is $$$, shipping an actual quad would cost as much as the exhaust itself

cheers