You can adjust the idle on a 09 Yamaha Grizzly 700EFI.I'm not sure, but I think ur outta luck on that. If its like a car, its a programmed calibration in the ecm or like a ford a programmed calibration in the fuel injection control module, controlled by the ecm. And I highly doubt its a progrmmable feature, on some diesel engines (cat, cummins etc) its programmable, but I'm thinking no on any efi quad.
I could be wrong tho, bo gary jeff... Anybody got some add'l info on this?