6.4 odd exhaust gurgle/pop noise

[ToTheDarkSide]

2019 6.4 with mufflex MF and deleted resonator. 6k on the clock
Runs great! Cold mornings no problems. Warm afternoons no problems.
When this noise appears is when I drive to normal operating temp and shut down. Wait a half hour or so then start up and drive. As soon as I put it in drive and start heading down the road it gurgles and pops during the first two shifts and then clears up and runs like it should, smooth.
It did this when the resonator was still on but not nearly as noticeable.
I always drive in manual mode so I tried to start out in tow/haul. Still did it. So then I tried just in Drive. Still did it.
Just an odd sound and feeling when you take off like there is unburnt fuel detonating in the exhaust. Kind of crazy for saying this but it’s almost like shifting a big rig with the jakes on getting that popping between shifts

 

[Ryan Mackie]

Mine does it too. Never noticed it until I put MBRP exhaust on it. Also notice when driving around and low speeds (10kmh or less) and going down hills etc it also does it. I think it’s just nature of the beast.

 

[Stryker755]

Mine does the same thing. Didn’t notice until the MBRP was put on.

 

[LeesEvoX]

yep. another one here. Does it on my PW.

I dont know what it is. But if you really feel the truck out, you can hear the exact moment it stops while accelerating.

I think its something to do with the lifters before they get the oil in em.

 

[Wadejesu]

You need Livernois Tuner,

 

[ToTheDarkSide]

Livernois tuner? Sorry. Haven’t been keeping up on things

I have 15k on it now. Still does it. Making an appointment soon for shaky hood, an oil leak at trans housing, and for this issue to check out. I don’t want to void the warranty just yet