Started up my mcs this morning. Cold start. And heard a squaking while idleing. Opened the bonnet and tracked the noise to the serpintine belt. Noise went away after the car warmed up. So im thinking its time to replace the serpintine belt. So im gonna go ahead and do a reduction pully as well. Probably do the m7 16% We will see. Ordering in a few days. Wish me luck

 

don't need luck its a good mod, have fun!

 

thanks just wish me luck that it will fix the sqeaking...

 

Might want to consider a damper/damper assembly replacement at the same time. No extra work once you've pulled everything to do the pulley. Might also be the cause of your squeak.