I have a 2015 m6 challenger.
It was stock until 9000 miles.
I installed a 2.75 pulley, ID 1300 and run E85.
I have 15k miles now.
Mine used to be very quite.
I was doing some hard runs thru 3rd gear on monday. Only like 3 pulls.
The bearing starting to make some noise, I wasnt sure what it...