Hey guys, I have a 2005 6.0 powerstroke with a cat delete and im running a bully dog programmer and im having an a screeching/squealing noise coming from the top of the motor when i get up to 1100/1200rpm+ and as soon as i let off the pedel it stops so i was thinking turbo bearings but i took it to the ford house to double check and they are saying its the egr cooler? Sound legit or no? Oh and they want to charge me 2k to fix it so if thats the issue whats the best egr delete kit to get and what kind of issues will i run into doing it myself.

Thanks