While MyECU allows custiom tuning and auto tuning this has been at a fairly low level. What has been lacking are higher level visualization and analytical tools. So this year I'm going to focus on that side of things.

To start the ball rolling here is something you can use to see a 3D representation of your map - http://www1.myecu.biz:8080/

hi Cliff,

Nice! Uploaded a couple of my concept maps just to give it a whirl. Looking good and also a sanity check of sorts: it actually reads my files.
Suggestion: could you include a checker that goes over the syntax in a map file and maybe does a couple of checks on the parameters and map values?
I would be quite happy to help out designing and testing. Can't write code though.

cheers
Tom

The multi lines are quite useful, I made something similar in a spreadsheet. It helps to see illogical values sometimes better than the 3D graph.
And it is good to see where parts of the maps are linear; that means you can spread out the breakpoints wider since an interpolation will give the correct value anyway. Of course for that you must check both injection and ignition timing maps to see if the linear behavior is in the same ranges. So far it seems to work nicely in the upper rev ranges.

I also make the multi line graphs in the other plane, that helps to see funny dips and crossings as well.

As for optimal breakpoints: I can imagine a software routine that analyses one or more maps and determines the amount of linearity and steps between current cells. Then it would be possible to rearrange the breakpoints such that they concentrate around the areas with the 'wildest' behavior. Of course that would always be a compromise and it should find a sort of overall best fit within a certain bandwith. You can see it as a wire frame where you position all 16+15= 31 lines of nodes so that you get the best fit over the mapped surface, with least total stress in all the connecting edges. A max entropy algorithm would do that I think.

Hmmm.... From chicken wire forming to quantum mechanics in two small steps.
It's probably complete overkill, but if it's possible, why not

cheers
Tom

Bobd wrote on 06/15/20 at 22:36:01:


BobD,
Starts are tough for me too, esp cold starts, with a '09 V7.  If anyone has a good approach to dialing in "starts" I'd love to hear it.
Joe

Interesting, I hadn't thought of that issue.  Although I've got a lithium now, the hard starting also existed w a lead battery.  Of course both could have been undersized. 

Hot starts are fine.  Keep the throttle open, just a like carb bike.

One issue is that it's got big bore 820cc cylinders (bike is an '09 V7), so the air-fuel mix was off right from the start (which is why I got the MyECU).

Joe