Join Date: May 2004
Location: Hazel Green, AL, USA
The air valve is not a choke but rather sets the idle speed. The air box sensor modifies the pulse width on the injectors based on air temp. Disconnecting this will help with hot temperature stumbling if you experience this as it leans out the mixture. There was also a "brown wire cut" mod for the early bikes that would force an alternate fuel map to do the same thing. Never do both as that will lean out the mixture too far and you will risk detonation damage.
The engine temp sensor on the back side of the cylinder head controls the trigger point for the cooling fans (quick way to test the fans is to disconnect this sensor to force the fans to "ON") and modifies the pulse width for the injectors for mixture control based on engine temp.
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT
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Last edited by jzeiler; Jan 24th, 2020 at 3:06 pm.