Hi guys, I'm new to this forum and have been looking for a solution to a noise my 07 S60R GT has been making for about two months now. After a cold start there is a chriping/whistling noise that lasts a few minutes at idle. The noise will go away at idle but is constant under heavy load in any gear. The Volvo dealer told me it was the SNABB intake but the noise started well after I installed this with no noise initially. They said its not from sepentine belt or pulleys. It sounds as though its coming from the turbo area. Car still drives/pulls fine but makes an ugly shrieking/chirping/whistle when I get on it ( which is most of the time). I'm wondering if this could be a wastegate issue?

Only mods are iPD strut mount conversion, IPD torque rod, heavy duty upper engine mount, IPD subframe bushing inserts, KN filter, SNABB turbo inlet piping, RKelly intake pipe.

Thanks