Here's the thing. I got my magnaflow catted x pipe installed at the end of january. Well last week, all of sudden, my exhaust has got a LOT louder, to where its noticable enough where my girl actually asked, why is your car so much louder. I figured i had an exhaust leak somewhere. So today i took it to the shop that did the install. They put it on the lift, tightened everything and didnt see anything wrong. they even started it on the lift and checked for leaks and nothing. They assumed that the cats on the x pipe must have broke in and the car just got louder. I mean, its a good loud, i love it, but its bizaare that out of the blue, one day, it just got louder and it rumbles more to where i can actually feel the vibration of the rumling when i'm driving. It still has all the power it's always had, so i dont notice any negative effects. Anybody have any ideas?