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  1. Engine/EFI/Drivetrain
    I'm am new to these forums.I have a 2013 kfx 450 with a full hmf exhaust and a lexx fuel controller (3 buttons setup) and I was wondering if anyone is running the same setup and what setting they were using.
  2. Engine/EFI/Drivetrain
    I've been doing research on running race gas seeing as my old 2-strokes loved it. My job is also a VP Dealer so it doesn't cost to much for me either. I've been leaning towards U4.4 (102 Octane, Leaded, Oxygenated, Additives for powersports motors supposedly as well) after talking to my boss who...
  3. Engine/EFI/Drivetrain
    I'm looking at trading my 400ex for a Kfx450r this weekend. I've always dealt with carbs on my other 450's/400's so I was curious what the most cost effective way to go is for doing an exhaust. It already has a K&N so that's covered. What I'm not too sure on is a programmer for the EFI. I know...
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