Image James Stewart will usually head out to the track with a couple different EFI maps loaded up, and the knob on the bars allow him to adjust the mapping while out there. Credit GuyB Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 18 of 22Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 1/5/2012 6:58pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter