Thread: M550i Downpipe
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      09-29-2019, 07:52 PM   #2
Second Lieutenant

Drives: 2019 M550/2019 330 M Sport
Join Date: Mar 2012
Location: Northern California

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Originally Posted by SXY550 View Post
I am thinking of getting an ARM MOTORSPORT cat-less downpipe for my G30 M550i soon, but I have a few questions before I install it. My current set up is Stage 1 Dinan tune and resonator delete. Does the cabin smell at all? How much is drone when it is idling/driving? How loud is it under comfort mode? Is it damaging to my muffler since the car is almost straight piped? Would you recommend me getting it?


Looking to do same thing also have res delete. On the fence because of my own current lack of knowledge on adding downpipe