Exhaust beeping? 428i

[WonderWoman]

Just curious...(1st bmw) When i rev the engine, there is a distinct beep from what seems like the exhaust. Never noticed it before. Is this a bmw thing?

[Pelican Parts]

I haven't heard of this before from any BMW, can you post a sound clip of this please.

[WonderWoman]

I took a video of it, but I'm not sure how to post it here. I put a video on YouTube...

https://youtu.be/2nLxBuVZR64

[mbanks21]

Wtf? Get that checked out

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[Pelican Parts]

+1 I would definitely try to address this.

[WonderWoman]

+1 I would definitely try to address this.

I have a service appointment set up & I sent the video to BMWusa also, because I can't find ANY info on the web about it.
I did read one post about a possible "exhaust sound chip" that may or may not be installed in the muffler...so perhaps it's something to do with that, but either way...it's not right!