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#196874 BearNuts (User) Fresh Boarder Posts: 83 Jetting help 4 Years ago   I'm getting a loud backfire out the exhaust on hard decel. I just did the stage 3 exhaust and added a Speedstar (K+N) filter. I rejetted the carb with DJ jets 175 main, 4th grove, and PMS out 3 turns. I did the WOT test and it is not running lean. Is this a PMS issue or Main/needle issue. Thank You   Logged       The administrator has disabled public write access. #196884 Roadkill1962 (User) ΜΟΛΩΝ ΛΑΒΕ Platinum Boarder Posts: 3315 Re:Jetting help 4 Years ago   BearNuts wrote: I'm getting a loud backfire out the exhaust on hard decel. I just did the stage 3 exhaust and added a Speedstar (K+N) filter. I rejetted the carb with DJ jets 175 main, 4th grove, and PMS out 3 turns. I did the WOT test and it is not running lean. Is this a PMS issue or Main/needle issue. Thank You What's the elevation ASL of where you live? That has a lot to do with it... RK   Logged     “To compel a man to subsidize with his taxes the propagation of ideas which he disbelieves and abhors is sinful and tyrannical.” - Thomas Jefferson   The administrator has disabled public write access. #196887 Musky (User) Platinum Boarder Posts: 15137 Re:Jetting help 4 Years ago   Are you positive you have no intake or exhaust leaks? Did you do the WOT with the clip in the 5th groove? Did you set the PMS using the in / out method?   Logged       The administrator has disabled public write access. #196896 BearNuts (User) Fresh Boarder Posts: 83 Re:Jetting help 4 Years ago   I checked for intake leaks and I did not find any, I did the WOT with it on the 4th groove. I did do the PMS using the in and out method. It started doing it when I did the jets and the airfilter. My elavation is 126 ft above sealevel   Logged       The administrator has disabled public write access. #196897 Musky (User) Platinum Boarder Posts: 15137 Re:Jetting help 4 Years ago   BearNuts wrote: I checked for intake leaks and I did not find any, I did the WOT with it on the 4th groove. I did do the PMS using the in and out method. It started doing it when I did the jets and the airfilter. My elavation is 126 ft above sealevel Reads the WOT article (WOT)and then redo the test. At that close to sea level I'm guessing you are too lean.   Logged     Last Edit: 2009/05/20 15:10 By Musky.     The administrator has disabled public write access. #196898 BearNuts (User) Fresh Boarder Posts: 83 Re:Jetting help 4 Years ago   Ok I'll try that.Thanks for the help.   Logged       The administrator has disabled public write access. #196900 BigBoyinMS (User) I'm satisfied never being satisfied. Platinum Boarder Posts: 1745 Re:Jetting help 4 Years ago   And DJ doesn't give you the one jet that you probably need. Their kit goes from 175 to 190(or is it 195?) and in a DJ you probably need a 180. I've been running with a 175 and knew it was too lean. Finally got my hands on a 170 Mikuni and it's like a new bike now.   Logged     Last Edit: 2009/05/20 15:26 By BigBoyinMS.   2006 Midnight   The administrator has disabled public write access. #196906 BearNuts (User) Fresh Boarder Posts: 83 Re:Jetting help 4 Years ago   The kit does jump up to 190. I'll try to find a 180   Logged       The administrator has disabled public write access. #196914 BigBoyinMS (User) I'm satisfied never being satisfied. Platinum Boarder Posts: 1745 Re:Jetting help 4 Years ago   Might as well port and lap your manifold while you are tinkering.   Logged     2006 Midnight   The administrator has disabled public write access. #196916 BearNuts (User) Fresh Boarder Posts: 83 Re:Jetting help 4 Years ago   Your right. I've opened the door I might as well keep going   Logged       The administrator has disabled public write access.

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