Excuse my French but holy shit, do you get any compliments with your current set up?
A couple maybe, well let me tell you the x pipe will be louder at wot and a little louder at start up till she warms up but holy cow my man wait till you go under a bridge or tunnel and you open her up it's amazing!
It's more like an F1 car middle of the road roar with scream mixed in if that makes sense
Here is one of my experiences driving home from wherever and in my rear I see this guy in a jeep Cherokee weaving in and out till he makes it next to me and signals me to roll my window down he was in his 40-50's and starts yelling with a island accent BMW is the shit mon this thing sound wicked etc etc
That is a weekly occurrence no lie.
If you have a tune you will add hp and torque to your set up as well with this x pipe