New to the PSD, so please forgive the ignorance

It sounds to me like a lot of these guys have the "turbo bark" in the videos (found of youtube).... isn't that dangerous for the turbo? would a blow off valve help that? Or is there a reason that we don't have them?

 

The 6.0 doesn't need a blow off valve. A properly operating turbo with the unison ring and variable turbo compensates for too much turbo pressure.
If it's a 6.0 and barking, the turbo unison ring is stuck or not operating properly.

 

thanks!

i don’t have it, but I keep hearing it on the YouTube videos of dudes running tuned trucks

 

Happens all the time on the VGT style turbo. Accelerate quickly from 0 to 30mph and while the boost is up a little, quickly take you foot off the go pedal. If it doesnt do a bouncy sneeze (fart) like you heard in the videos it may have a problem.

 

Good to know. If it is happening, is there a fix, or just let it ride?

 

It just a function of its design. It shouldn’t happen often, just when you lift the throttle a large amount, quickly, while the turbo is making boost. It isn’t causing any damage. If you are hearing it often maybe adjust your driving style a little. I haven’t ran into a problem but maybe some more knowledgable folks may know if something like a weak VGT solenoid or something could cause it to happen easier? I’m not aware of any modification to keep it from happening without changing to an aftermarket, non variable turbo and a wastgate.

 

Just your normal every day compressor stall.
When I say stall I am talking about the air flow not the compressor or turbine wheel.

 

Yeah, 6.0L turbine "Bark" doesn't sound (or feel) like a compressor stall or surge at all....Last one I had resulted IN a flame-out.

 

I'm no expert but my experience has shown this to not be correct. Turbo was cleaned and inspected when my head work was done. When I run hotter tunes the turbo "barks" when I let off the throttle quickly under boost. It doesn't do it on stock tuning. Whether it's damaging or not I don't know, but I do know it has nothing to do (at least in my case) to a stuck or not operating unison ring.