ACG is made by Porterfield.....The loud brake squeal noise and crazy black brake dust is due to the cheap oem pads they use.........I had the issues and fixed it by replacing the pads with Porterfields r4s street pads...just call them and order direct.....now I have zero squeal and less dust
https://www.porterfield-brakes.com/m...akes/R4-S.html