Not to stir the pot, but you do not see this going on in the auto world. In that area the manufacture is trying to squeeze every last mile out of a gallon of gas. Yes there are people trying to turn their cars into the Fast and Furious but the masses buy a new vehicle put gas in and drive. So with all manufacturing there is a limit before self destruction and I would believe that most manufactures stay far on the conservative side of that limit.
Finally someone else that gets this !!!
your bike is like mobile barometric computer making millions of adjustments in closed loop to keep the bike at the target AFR 14.6/7 (stoic)
Lean or Mean the AFR might be lean but the VE makes up for this , quick explanation i guess
AFR as we know is air to fuel ratio so closed loop is 14.6 parts to 1 air (Stoic - at atmosphreic conditions i.e. sea level)
VE as we know is Volumetric Efficiency of the motor - how much AFR you can cram in the swept capacity of the cylinder
the more efficient you make the motor - ie free up the intake so more air gets in you obviously need more fuel so without either adding more AFR (13.5 and so on ) your bike becomes lean BUT - you haven't altered the VE table in the ECM to compensate so its not aware that you made the motor more efficient, it still believes the motor is choked to high hell, so you tune on the DYNO or Smart tune on the race tuner, to get the best efficiency you can out the swept volume, once you've done this and got it as efficient as can be - you put the AFR back to Stoic and let the 02 sensors do there thing keeping everyone happy as you have a more efficient motor and more power and still keep the greenies happy as your running within the EPA controlled area of the map when your rumbling around town with your non EPA compliant exhaust and intake
:s
and this is what the dealer flash takes into account its might not change the AFR able persay (it does it makes closed loop smaller
) but it alters the WOT, Accel fuel , start up , idle, RPMS, and best of all tells the ECM your engine is more efficient due to the open intake:newsmile07:
as for the heat your on an air cooled motor its gonna be warm but harley of old ran rich so we all got used to the cool lumpy idles, and oil on the drives, we then got marelli injection (aka basic manual EFI) then we got Delphi FI bit more sophisticated but still no 02 sensors , then came the Lan systems with 02 and the game changed again now we have the Can-bus stuff with body control modules and so on very very close to that of BMW and there no slouches with tech or luxury or high power and performance
