Stock exhaust w/ BMW downpipes. Too Loud?

Going crazy trying to watch all the videos on youtube on this.



I have Stock exhaust and I have BMS downpipes sitting here I am debating on installing them. I am enjoying the stock quiet exhaust.



Came from a 3" straight pipes 2.7biturbo Audi.



So.



With stock exhaust (mufflers and 2nd cats in place)...will the BMS catless downpipes be too loud??