Originally Posted by Rapture
I've had the MS pullies on my car for over 2 years and around 35K miles. No problems, no weird noises, no issues at all. I occasionally will hit full lock, but will always give it less wheel to bring it off lock.
You may have had an installation error or now the pullies are highlighting a pre-existing problem
M3s typically don't have power steering issues, but you've got the right idea.
Belts do grip best when warm, its not uncommon to hear a chirp from a cold engine. Make sure there is no grease/oil on the pulley surface or belts, the tensioner should provide the tension it needs.