I would like to thank this forum with the great information they provided to me through my search.My 2010 ultra limited is my first harley after owning a number of Japanish bikes.I have 16000 miles and have not being to the stealer after my first service!Got the manual and i do my own maintance and the bike is FLAWLESS. I had the s&s 570 cams installed and kept my original exhaust set up power douals headers and monster ovals pc5 k&n filter, 95hp 103 tq but was so noisy i could not stand it any more. So after reading few posts here i installed my original mufflers instead the monster ovals, and i felt in love with my harley again. I my have lost some hp but i feel the bike pools so much better from 2000 rpm and is so much quiter with a mild rubble its music to my ears.Again thank you for all the info!!