I did all the mods except the removal of the exhaust baffle (to be nice to the neighbors), but today I took out the spark arrester as a unit...........holy crap! I didn't expect much difference, besides noise, but the difference was huge. Now I am thinking about an aftermarket head pipe and exhaust. What can I expect from a new exhaust versus a totally open stock exhaust? The open stock unit is a little too loud for my taste. I would like an aftermarket pipe that is a happy medium between stock restricted and stock open exhaust (spark arrestor removed). Something that sounds low and smooth (loud is OK) but not tinny and with that rattling sound. Any advice? What have you been happy or dissappointed with? I was thinking FMF with a powerbomb or maybe a yoshimura pipe with stock head pipe. Or maybe a white bros so I could tune it myself.