Just received the Spyder attitude muffler from Shultz and it took about 20 minutes to remove and install on my 2010 RT-S. I have found it is everything he says it is. Gives a very nice deep tone at idle and a great performance sound while going through the gears. At hwy speeds it quiets down a bit so I can still listen to the stereo without straining. It actually kinda sounds like my 2009 Ultra Classic Harley Davidson (which by the way I traded in for my Spyder). I would recommend this product for anyone wanting to change from there factory muffler. Thanks again Schuliz.