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      02-05-2020, 02:25 PM   #8
zdbmw
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Drives: BMW G30 540i xDrive
Join Date: May 2019
Location: Russia

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The problem in the 540i isn't so much the resonator/muffler as it is the downpipe. The downpipe on this car absolutely kills the sound and chokes the engine.
I installed a catless downpipe on mine along with the MPPSK kit, sounds fantastic! Planning to do a resonator delete to make it even louder haha