I just got back from Johnson Valley here in so. cal. They have a small dry lake bed to race on. I raced a ds 650 3 times. I had him on every run until I hit my top end. Then he would slowly (very slowly) creep on by. Probably at 1 or 2 mph. The last time I raced a ds650 ( before pipe and pink spring), he would catch up a bit faster and pass me by quicker. So this I like. I was also at the small dune area and a group of guys waved me over ( 4 or 5 of them were waving their arms, that has never happened to me before). They heard me and thought I was in a sand rail. They thought I had tricked this bike out. I said not yet![img]i/expressions/face-icon-small-happy.gif[/img] I love the sound of these pipes. I wish there was another V out there to compare to.

 

Did you do any jetting? My Muzzy pipe is on but haven't fired yet- still doing other mods....and waiting for parts.......Glad to hear of the excellent sound.

 

No jetting changes yet. My bike was running rich before the pipes. I will check plugs tomarrow. I do have a little bit of popping during decelaration, but not much and it sounds cooool. Its just after going full on and let off fully you get a pop..........pop.............................pop. Not a harsh or loud sound though. I ran without the quiet core or spark arrester.

 

My stock jetting was rich also. I put in the Dynojet kit , starting with the rec. jetting for pipe, filter and alt. although I'm also using a snorkle.... put in the spark arr. but left out the Q core.