Routy wrote on 08/30/11 at 05:22:10:Wouldn't that be neat,.....a bolt on EFI kit for.........anything, not just our bikes. I have often wondered,....this day and age, why don't we ever see after market EFI. They make everything else !
There's aftermarket FI, just not bolt-on for any particular bike. A couple of guys have converted their DR650s to FI and were asked if they were interested in selling kits.. not interested. It is an expensive proposition for diehard tinkerers who would want to hand-select each individual component (and not pay a middleman) anyway. Anything can be FI'ed with enough brainpower and tenacity, though. I have a friend who built one of those Velocity kitplanes and plumbed up a 6-cyl Franklin from scratch.. ignition, FI, sensors, electronics, full logging.. guy's a genius. Unfortunately the engine crapped out on the plane's maiden flight and he had to put it down in a cornfield.. currently rebuilding.
It is interesting to note in Gyrobob's graph that on the far lean side, specific fuel consumption begins to go back up. It is good to be slightly lean of 14.7 so that there's enough air to scavenge for fuel molecules, but push it too far and the engine loses efficiency by huffing extra air around for no good reason.