Why does the stock exhaust of the 230f/150f sound weird, like it's screaming in the high end without the baffle? What makes it so different from aftermarket exhausts that sound good and deep while still being loud? I like the sound of the stock exhaust w/o baffle, but i just always wondered what's going on inside to make it sound like that. I noticed the power-up kit made it sound a little smoother and deep, but not a ton. and does ExploringWA's short can mod make it sound any different?