I'm sure someone with more experience will chime in, but to me that sounds like an issue with one of the turbos. If you downshift manually to build RPM instead of boost does it make the noise?Stock engine, had passenger manifold replaced two years ago. That was a lower exhaust leak sound when that was going. Nothing like this.
Man, that doesn’t sound good. Sorry, I don’t mean to scare you. Boy, I’d definitely do what my bro @bentruby said and I’d check the compressor wheels on the turbos. It could be exhaust manifolds again, but it kinda goes along with the turbo spooling. That’s odd.2015 3.5 EB. Happens only while moving under load, starts noise about 2.2k rpm. Hot or cold engine does not matter. Seems to come from driver side under the hood. Turbo spooling?
Side note it just started overheating when towing my camper (4,500 lbs) up ANY incline this weekend. Slight loss of power too. It was 90+ with A/C on but I have pushed this truck way harder than that in the past with no issue with power or engine temps.
That sounds like it’s one of the turbos or both honestly. But of course that’s just a guess, but I’d definitely pop the inlet tubes off and see if there’s any play in the turbocharger shaft.The sound gets faster and more high pitch with higher RPM. Basically the sound occurs on start up at idle (slower sound for maybe 10 seconds or so after a start when the truck has sat for a bit, turbos building initial pressure or something?) and anytime the RPM are 2.5k and higher with acceleration. I can be cruising at 3k+ RPM with know extra sound and then accelerate and it will begin until I either cruise or slow down.
Geez.... that's EXACTLY what mine sounds like now that you painted the picture.What you're hearing is the steel gasket acting like a kazoo.
