Turbo noise

When we test drove our new truck my wife commented how quiet it is but just 18,000 miles later I can hear it is a diesel. These get noisier over their life than a gasser I think. But I don't hear the turbo even at high boost.

Rhawkins52! said:

es just starting doing something new. When I first start it, I can hear the turbo whine very noticeably outside the cabin. Inside not so much. And on the whole, I'm hearing a lot more mechanical noise from the engine while both in or out of the vehicle. It is running well and recently made a 2 way x-country trip 75 to 85 mph and returned 26.3 calculated mpg. Anyone else hearing new motor

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All I hear is the turbo sucking air, it's especially loud when the air is cold and more dense. I think it's the design and shape of the air box that is louder under certain conditions. I don't notice it that much when it's hot out.

I've been noticing a whine lately -- I initially thought it was related to tire wear but maybe this is what I am hearing. It's seems to be intermittent and haven't noticed that it was related to throttle position. Definitely sounds like it is coming from front passenger's side tire area = I thought maybe the tire hitting the frost line was somehow causing it... I don't remember this sound either of the past two (2) previous winters if cold weather causes it to be more pronounced.

Should I pull up the Turbo Boost gauge in the IPC and try to correlate the whine with Turbo Boost pressure? My first turbo-charged vehicle so maybe that's why I thought it was something else....

Follow up: Made a common local trip twice today with the Turbo Boost pressure gauge displayed and could not correlate boost pressure with the whine.

I'm pretty sure it is the road surface as I only really notice it on about a 1/2 mile stretch that I drive every day and that road was re-surfaced this past summer. Only happens going north-bound on this state highway if I get near the frost line and does not occur going southbound.

As an added bonus, NY State cut a rumble strip on the centerline of this undivided 2-lane highway = definitely know when you drift to the left when you hit that!

Move along -- nothing to see here!

Rhawkins52! said:

My 2018 KR with 42000 miles just starting doing something new. When I first start it, I can hear the turbo whine very noticeably outside the cabin. Inside not so much. And on the whole, I'm hearing a lot more mechanical noise from the engine while both in or out of the vehicle. It is running well and recently made a 2 way x-country trip 75 to 85 mph and returned 26.3 calculated mpg. Anyone else hearing new motor sounds?
RH

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I seen videos of a screw near the EGR valve or something that comes loose and gets sucked into the motor killing your valves and everything.. hope that isn’t it but you would probably know.

Mine runs great but I have an oil leak from the turbo side of the engine and it also makes some funny sounds when cranking in the cold and about 30 seconds after I crank it it skips one time. Every time, one skip at 30 seconds. It must be a setting in the tune.

I added an S&B intake, and it definitely helps accentuate the whine when the windows are down. Pulling the TT it sings through the campground. The 4” Magnaflow I’m sure doesn’t hurt.