2018 Range Rover sport HSE dynamic. I know this is a longshot, but can anybody help me determine the source of this pulling noise? Is it the idler or other? Noise continues with the AC compressor off. Unable to put a stethoscope on each pulley since I can’t run the engine without the Intake Plenum off. My next step will be to remove the belt and manually spin the pulleys. I hope its not the supercharger. There's no change with the AC compressor off.

 

Seems like some noise from the idler and some slop in the SC coupler. Would you agree? I’ll try the idler first before taking off the snout. OBTW, only 48k miles