Boost > NA
So my AC pull had started squeaking pretty bad whenever the system cycled, AC on or off, as long as the fan was on. I finally thought to myself, my AC hasn't been on in a looooong time (coming off deployment and returning in winter). So I thought maybe the system needed oil and refrigerant ran through it. BAM cured...ish. Now since then when the AC is off and the system cycles, no noise. When I turn the AC on and it cycles I still get a faint squeak, but not as loud as it used to be. It has 76k on it.