Originally Posted by Dementors
The SC pulley install can be different from one car to the next. I went from two shims with the stock pulley to no shims with the SC pulley and had no issues with rubbing/clearance. What was the gap before and after?
I agree with your logic, if the sound appeared after the install it more than likely has something to do with that pulley. Maybe reinstall to stock and see if the sound goes away, especially since it is easy and not too time consuming.
Also, you will be buying the DCAI and tune, in due time. Just give it a few months when you get use to the power or have a 5.0 Mustang get past you.
Will see answer from jerry and the EC gang. But may use another shim then. My worries are mostly that it is not straight all around. What happen if the gap is too wide vs too narrow?