M5POST - BMW M5 Forum - F90 - View Single Post - F90 M5 M Sport / Competition Exhaust arrived. Videos, install pics and decibels info.

MF Larry · 09-27-2018, 11:46 PM

installed today at cold start its making a metal to metal grinding sound any idea??? have to drive BACK dealer so annoyed

only at cold start it sounds like the exhaust is loose metal to metal griding

09-27-2018, 11:46 PM	#108
MF Larry Private First Class 176 Rep 137 Posts Drives: 2018 M5 DONNY GREY Join Date: May 2018 Location: NYC iTrader: (0)	installed today at cold start its making a metal to metal grinding sound any idea??? have to drive BACK dealer so annoyed only at cold start it sounds like the exhaust is loose metal to metal griding
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