Okay team. I've got an odd noise coming from the backend of my 14 V6 S. Unable to get my phone to record, so I'm throwing out a description in the hopes it's happened to someone here.

The sound comes and goes - both during deceleration and acceleration. Seems to go away if I touch my brakes or put the peddle down hard. The sound reminds me of a modern diesel engine - has that whine to it. Mostly appears at low revs (although maybe just downed out by loud engine at high revs). Like coming into town and you start to slow down, there it is. Doesn't matter if exhaust is on obnoxious mode or regular.

Any suggestions would be welcome. I cannot visually see anything off or loose.

 

Vacuum pump for the active exhaust?

 

 

Try pulling fuse F43 in the passenger floor and let us know if that resolves the issue.

 

+1 to all. My active exhaust vacuum pump sounds like a buzzing heat shield. It toggles on/off at around idle speeds. Wonder if you can read this document - posted it recently, and was told it wasn't readable...
https://www.dropbox.com/s/szc3vze5ol...haust.pdf?dl=0

There was a TSB (or something like that) that removed the vacuum pump, and ran a vacuum line back from the engine. Wish I had done this under warranty. I don't seem to have that document.

 

 

Thanks for that - just copied the PDF to my Dropbox collection.

 

 

 

Same here. Blue and also in my glovebox