Got a full TME stainless exhaust system installed on my 2007 Volvo S80 V8. This video shows a cold start with a small sets of careful revs.
The second sets of cats were also replaced by the TME cat delete piece. End pipes are the double stacked 2 x 70 mm TME units that came with the exhaust. I had them ceramic coated with Cerakote to give them the semi-gloss black finish they have now.
No drone at any speeds, very quite during normal cruise, just like stock. But give it some revs and it'll come to life. It has a nice V8 roar at higher RPMs during load, love accelerating out of 2nd or 3rd gear to cruising speeds. It's noticeable louder than stock then and the sound is way deeper and refined...