break in is done turn 550, keep rev,s up ,didn,t feel safe going that slow glad thats behind me. bike has great responce stock i don,t ride two up so i don,t have that drag if ya-know what i mean. enjoying bike on the quite side----more cities are putting out the unwelcome mat for loud pipes cops know the fix-it ticket going to cost you big bucks and there glad to put it to ya, fishermans worfe,capitola,niles canyon to name a few..called chicago hd(20% no sales tax) orderer se silp/ons -k/n filter. going to store parts and keep riding stock for awhile can always break window with my ultra if i want to hear my pipes, this o4 is everthing i ever wanted in a bike. 3500 folks will know what i mean --------ak