Kfx 400 with big bore kit, k&n filter, and big gun rev kit exhaust.
Dec 20, 2017 | 06:05 PM
#1
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Weekend Warrior
Joined: Dec 2017
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Kfx 400 with big bore kit, k&n filter, and big gun rev kit exhaust.
I don't have the right jetting, what size would I need? It puts out black smoke, it bogs and studders, and a high weird idle. I've messed with the idle and air to fuel mixture screw and still won't run right. Any suggestions?
Dec 20, 2017 | 06:15 PM
#2
Polaris ATV Expert
Retired and loving it!
Retired and loving it!
Joined: Jun 2008
Posts: 24,350
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From: North Texas
You might use this as a reference to stock jetting plus they show a jet kit available.https://www.jetsrus.com/a_jet_kit_at..._2003-2006.htm
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