I’ll put it like this here’s what I did.
Stock WBSP
then added BORLA ATAK with valves to retain the factory valves.
‘then purchased Z automotive ’inactive exhaust’ to delete the valves
Effectively I have Borla ATAK with valves wide open at all times thanks to the z automotive delete and then if I ever want to go back to valves, simply un plug the modules from z automotive. And they don’t throw a CEL.
To answer your question:
Sport mode is louder than normal, and has the potential to be as loud as an exhaust delete but only during wide open throttle. The delete gives you that sound at all times. The one thing to keep in mind is that a delete will make ‘auto‘ mode (when MDS is active) aka 4 cyl mode sound a little drony when the 4 cylinder mode kicks in. You can defeat that by either setting the transmission to sport or what I do is set my custom mode to all street settings with the transmission in sport.
That said, I totally love the idle with the valve delete and it’s not raspy, it sounds good!
Good luck