Not sure if this is the right spot to post this or not. Truck is a fully deleted studded 06 with 99k miles on it. Religiously maintained never skimp on service. Noticed today on my way to work my turbo seemed to be working harder than usual (higher than usual psi) under normal load. When letting off the throttle you can hear a slight howl noise right before the "fart"! Never had this noise happen before. Any ideas would be much appreciated. Also VGT on SCT x4 seemed to be okay and moving.
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