Just looking at the current posts in FJR Central - +7 on FI......and while some folks are adapting to a more gentle throttle control approach for the 06 to get around any low speed abruptness or snatchiness I'm wondering if the problem can be reduced with a combination of fixes. If we put aside the emission based, low speed mapping issues for the moment (ie fix what you can for lowest cost first) and focus on the mechanical and rider based issues of improved throttle control these are the fixes that come to mind for me:
(1) Develop better throttle control.........
(2) Reduce the spring based resistance by removing the unnecessary throttle return spring. This fix is well documented.
(3) Increase the throttle sensitivity by increasing the rotation range Vs cable pull. This could be achieved by using a cam twist grip / cable pull where the immediate radius of the cam is reduced from the current radius for low pull / RPM and progressively increased to full current radius at high RPM. This means that the angular / rotational throttle range is increased for low speeds which will provide more throttle sensitivity for the rider.
I don't know what the current twist grip mechanics look like, but if its a reasonablely easy matter to deepen the cable guide "recesses" or grooves etc and create your own progressive cam effect with a thin flat file then modifying the existing part may be possible as opposed to waiting for an aftermarket solution.
(4) An eccentric centred roller further along the cable assembly may also be useful but it would be necessary to ensure the roller / cam didn't slip on the cable. Similarly some sort of eccentric pivot / roller could be used at the common drive rail for the throttle body butterflies.
(1) Develop better throttle control.........
(2) Reduce the spring based resistance by removing the unnecessary throttle return spring. This fix is well documented.
(3) Increase the throttle sensitivity by increasing the rotation range Vs cable pull. This could be achieved by using a cam twist grip / cable pull where the immediate radius of the cam is reduced from the current radius for low pull / RPM and progressively increased to full current radius at high RPM. This means that the angular / rotational throttle range is increased for low speeds which will provide more throttle sensitivity for the rider.
I don't know what the current twist grip mechanics look like, but if its a reasonablely easy matter to deepen the cable guide "recesses" or grooves etc and create your own progressive cam effect with a thin flat file then modifying the existing part may be possible as opposed to waiting for an aftermarket solution.
(4) An eccentric centred roller further along the cable assembly may also be useful but it would be necessary to ensure the roller / cam didn't slip on the cable. Similarly some sort of eccentric pivot / roller could be used at the common drive rail for the throttle body butterflies.