Thread: X5 M50i Mods
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      01-10-2020, 12:09 PM   #36
Tim2189
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Drives: X5 M50i
Join Date: Jul 2008
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Quote:
Originally Posted by Ninefourteener View Post
Thanks..... learn something new every day. I would need to see the muffler orientation..... but I'm assuming 1 pipe on each side is "un-flapped", and the other pipe is flapped?

I actually thought the muffler was a 2-out muffler.... with tailpipe splitters.

Presumably it's a 4-out muffler?
I should of taken some pics when it was up on the lift.
Essentially it is 2 seperate pipes coming from the headers/downpipes to the resonator and continuing as 2 pipes down to the muffler where it then branches out to 4 pipes (outlet from muffler) (that is where the exhaust flaps are mounted)
The exhaust flaps are one on each side so you'll get 1 open pipe from each side when valves are closed.
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