Audi A5 b8 2tfsi CVT exhaust blip/fart

Hi all.

I have the CVT gearbox and not DSG although under medium to heavy load 50% - 70% i get the same blip/farts in as a DSG-Stronic i have a 3" dp and exhaust. I only get this from 1st to 2nd gear and sometimes 2nd to 3rd above 5k rpm. It's s not always consistent. Could somebody explain this to me in anyway. I was under the impression only DSG gearboxes does this.

Thanks in advance.