Hey guys, Does anyone know exactly what the idle adjuster does on a 2012 WR450F, does it increase fuel? I'm talking about the cold start knob (where a choke would usually be) that doubles as an idle adjuster from what I read in the manual. I'm wanting to know as currently my bike is running quite lean at idle due to an aftermarket exhaust. Whenever I let off the throttle, I hear constant popping until i turn the throttle on again. And the GYTR tuner is unable to change the fueling below 1/8 throttle. So does anyone know if that adjustment would increase fuel at idle to solve my issue? Thanks, Nath.