I got my milltek non resonated installed today. first impression after install was its quiet.. as i drove home it got a tad louder with nice hum. not loud like the one in the video section.. just a tad bit louder then stock. prob will get a bit louder as the packing inside the muffler loosen up.. install was easy straight forward. only challenge was gettin the stock exhuast off the hangers as its one piece and its heavy!. any differences? I say feels smoother, u dont feel the bottleneck like the stock exhuast.