We need the DAMOS for the ECM or a listing of the tables found by "cracking" the ECM programming..
I am expecting a Target AFR table, Airflow thru the throttle body table, VE table, Gear modifier table, Coil dwell table, as well as the usual IAT and MAP modifier tables..

But yeah, I guess it could be a much simpler solution - closed loop that extends quite high in RPM/TPS, then open loop that is simple Alpha-N..

 

[img alt="For what its worth.
There is a manifold pressure sensor.
Maybe I should log that also?
Does that determine the switch points?
Or is it just RPM and throttle position?
If I could just get the fuel trims.
This would be way more fun without the snow.
This would be way more fun if I could edit the damn tables.
At least we can get an idea how well the ECM does corrections stock.
"]https://cimg3.ibsrv.net/gimg/www.kawasakiforums.com-vbulletin/2000x1124/pxl_20250416_210130620_mp_873ad3d6a697e30332578cc2 b7eb1e6ccce18e35.jpg[/img]
For what it's worth. There is a manifold pressure sensor. Maybe I should log that also? Does that determine the switch points? Or is it just RPM and throttle position? If I could just get the fuel trims. This would be way more fun without the snow. This would be way more fun if I could edit the damn tables. At least we can get an idea how well the ECM does corrections stock.

 

Well, nothing about the implementation of the KLX EFI system, and how it works, is important.. Since we do not (currently) have the ability to view and edit the internal tables, there can be no tuning ON the ECM itself - all tuning must be done with "piggyback" tuners AND this tuning can be done ( and verified) using your equipment.

I am hoping that you and your equipment will end up being the "breakthrough" that creates ( and verifies ) properly fueled "Tunes", for various mod combos, using a readily available piggyback tuner ( EJK, PCFC, etc ) .


At this point, what is needed is to establish a proper circuit that allows easily repeatable runs to be made in various gears. This will establish the baseline fueling of the ECM for performance engine operations. A secluded stretch of roadway that will allow , for instance, a run in 4th gear, starting at 3k RPM and ending near redline.

Once these data sets are created and verified repeatable, we will have the baseline to build on.
You will then need to decide if you are going to keep the stock ECM ( with its' detuned top end) or replace it with one of the "unleashed" ECM's.
Then you'll need to choose a tuner - EJK or PCFC - for tune creation using your circuit and run logging.

 

My thoughts exactly!
The pull I showed in the screenshot, is an uphill 4th gear pull from 3k to 8ish.
The curve doesn't show horsepower but I believe the shape is the same. I'm half tempted to put the STP back on to prove this.
Next problem is what's next?
I bought a piggy back from Dmitriy that I plan to use with the 351. I think I can pull fuel with that also. My plan is to install the 351 with a 270cc injector along with the controller.
I would love to test everything available for the sake of the community but my wallet does not support that endeavor.
I can install the stock snorkel and STP for a absolute baseline.
Log each change and share the results.
Your input is welcome with testing and results.
Please install the app and I will share the pulls with you for your evaluation.
I have high hopes that this will be a very informative process for every fi KLX300 owner.
Any requests are welcome.
I would pay shipping for items to test such as pipes injectors piggybacks airbox.
Once I install the 351, I'll stick with that. Until I break it or I install a Keng 402.
I see he refreshed his 402 and has 38 HP today. With a knobby tire😅.
Thank you KLXSTER and everyone else for joining me on this journey.
Sorry I miss spoke. It was a street tire used for the 38 HP.

 

That app is for cell phones. I am not sure it has the ability to chart AFR values based on a RPM scale . Such charting is what is needed for tuning.
About what you posted - I cannot see how that readout can be used for fuel tuning as there are no values assigned to anything.
Here is an excerpt from the manual with the plotting function highlighted:

 DATA ANALYZER The Analyzer is integrated into the iLE app (available for both Android/iOS), so one app offers all features. The recorded data can be displayed as a graph/chart in the Analyzer, plotted against the elapsed time or the distance ridden. There’s also a map view, displaying all the data accurately based on the GPS records. The app can also calculate precise lap times; a vital feature for closed course applications.

I am unsure how AFR plotted against ET or Distance ridden is going to allow fuel tuning. I am also concerned that neither axis has values assigned

 

It's Android or iOS.
I believe there is a way to export .csv but I don't know that.
If you install the app you can verify every point and it's value. The vertical line is the point in time and the values for that point are displayed on the top of the screen. AND you can zoom in to see and identify every value at any time.
You will not be disappointed.

 

I finally got to do a short ride tonight. Not exactly a full throttle pull but interesting for sure.
The interesting but not too surprising part to me is it is closed loop until about 75% throttle then it is just a shade lean until 80% throttle, then it's a shade rich.
This is with KDX snorkel and secondary throttle plate removed.
To get a real feel for the graph, you need to install the free software from healtech and I will share the log to you to analyze if interested.
Or I can find a point in the log you might be looking for, just ask.
I might try the factory snorkel, and lid less to verify the results.
I didn't have an exhaust to try at the moment to verify the AFR with free flowing intake and exhaust

 

That's pretty amazing that until 75% of the throttle we have closed loop!

 

More testing soon😁

 

if you will set up a precisely repeatable procedure for making simulated dyno runs, I it would seem that we could get usable data.