Exhaust upgrade help needed with butterfly valve

ray d

Active Member
Joined
Jul 4, 2012
Messages
81
Location
Northern Ireland
Car
slk 55 amg
Hi all, re my title I am thinking of getting a new exhaust system (new x pipe and power flow silencers) but am at a loss as what to do with the butterflyes in the rear boxes. So if anyone has modded their exhausts I would be great full as to how you got round that issue please
Ta
Ray D
 

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