austinbob wrote:YOu can go closed loop or open loop. In closed loop you are autotuning. In open loop you are running on the map that your auto tune produced.
Open loop is running on a map of some sort that is fixed. Closed loop usually means running on the map + corrections in real time, NOT adjusting the tune while doing that.
I could take the o2 sensors off my bike RIGHT NOW, and my bike would run just as good.
Will this be the case even if the cpu thinks they are connected? Not without significant time spent on code that could be spent on something more useful.
That is because I created the fuel map using the feedback from the sensors.
Exactly, YOU create that map using that feedback from the sensors with manual processes or good statistical analysis of the data at a later date. YOU, not it. Allowing it to change it is asking for trouble IMO and many others too.
Over time the the map becomes statistically correct and the sensors are making very small corrections.
This is the process known as tuning. I understand that tuning a bike or jetski etc is a pain in the traditional sense and can easily see your desire to let the ECU do the work while you ride, however this should still be a one time process that you define the time period of, not a continuing thing out into the future like OEMs do it. If your exhaust develops a leak upstream from the O2 your ECU will be "tuning" (read UNTUNING) the tables the whole time while it gets worse and worse. This is BAD. Any autotuning needs to be under controlled circumstances, not at it's own discretion (or lack there of). The easiest AND BEST way to do this is with a connected external tool. A palm computer is NOT too big to carry on the bike during the tuning period. It's not too big to always carry. Given that it's open source, when it becomes actually useful you will be absolutely free to modify it to suit your specific needs and distribute your modified copy with the licenses. I can't and won't stop you adding code for what the MS lads call "AMC" but it is WAY down my list below almost everything else. EGO correction is further up, but still lowish on the list.
It's good to have this discussion though. I know at least two other members want the computer to do it for them too. But I also know that more members don't want the computer meddling with their tune without their knowledge at all. No one with a good knowledge of the issues will want the ECU adjusting the tables in the WOT range. At least, no one that is making good power per litre where subtle things can cause melted things.
Fred.
