[Yellowflash21]

I think that, I figured how this works actually.

AMG A45/CLA45 tuned their exhaust systems similar while in sport mode and on higher revs to produce those burble sounds.

So, how it works well very simple by when you release the throttle between 2k-4k range, the small amount of fuel is being injected which makes those little crackles and which cool down the turbo in the same time.

This is for practical reasons way more pronounced in sport+ mode and on higher revs, as it actually has real purpose, but again in comfort and only click of dsc is simply pointless and just to draw attention (show off).

Well, It switch back to comfort mode anytime when you press DSC short or hold it for too long.

So request is if someone with MPE, sport-cat decat or fabspeed pipes could try this out on idle, and make some video.

Just rev on idle up to 4k revs and release the pedal.

I will try to make comparison video in the next few days.