M800 Lambda Long Term Filter

Discussion and support for MoTeC's previous generation ECUs.

M800 Lambda Long Term Filter

Postby Stolle1989 on Tue Jun 22, 2021 9:26 pm

Hello from Germany,

Exuse my Englisch, but sometimes I miss technical terms, I hope you understand what I mean.

I have a Motec M800 + SDL Dash/Logger on a Ducati 1098 Engine in a 916 Chassis.
After a few Rides, the Bikes runs good, but not perfect. The last Optimizations i would do on the Racetrack.

I activated the Dual Lambda modul and then i could see in the logged date where the Motec adjust with the short and long trim Filter.
Is it possible to read out the long trim Filter or push a button, that the M800 correct the Main Fuel map with the long trim Data or have i to look manually where i have lean/rich Peaks and correkt it manually?

Can i delete the long trim filter or delete it automaticly if i adjust the Main Fuel map?


And a second Question,
The Connection to my Notebook i do with the UTC.
But the UTC have to mount every Time at the bike, also when it runs. If i cut it off, the SDL Dash lost the actually data like RPM, Engine Temperature and something like that. It shows only the standard display, like if you get it 12V.
Its like frozen, RPM 0, Engine Temp 0, Lambda 0,00 etc...

On the Track i see some other Motec Users, and sometimes they only need the UTC to read the bike out or go into the ECU.

Do you know whats the difference between UTC have to mount on the bike all time and you only have to mount it if you want to connect the Notebook?

And 2 Pics of the Bike.

Kind Regads
Lennart
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Ducati 1098 Engine witz M800 and SDL
Stolle1989
 
Posts: 2
Joined: Mon Jun 07, 2021 8:37 pm

Re: M800 Lambda Long Term Filter

Postby David Ferguson on Wed Jun 23, 2021 2:39 am

The UTC contains a CAN terminating resistor. The reason your SDL doesn't communicate via CAN with the ECU is because there is no terminating resistor between CAN Hi and CAN Lo in your harness on the bike. The manuals for both the SDL and M800 show how terminating resistors are to be installed in the appendix for CAN wiring.

With your Long Term Trims logged, you should be able to tune your fuel table using those values. I'm sure your local MoTeC dealer would be able to help you with that.
David Ferguson
Veracity Racing Data
Check out Shift RPM - https://shiftrpm.veracitydata.com
David Ferguson
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Re: M800 Lambda Long Term Filter

Postby Stolle1989 on Mon Jun 28, 2021 6:43 am

Hey David,

thank you for your quick response!
I fitted a Resistor today, and the problem with the UTC ist solved. Now the dash works without UTC.

Can you say, where I can see the long term values? In ECU Manager or I2?
Unfortunalty I don't have a local dealer. The next dealer is at the other end of my country.

Kind Regards
Lennart
Ducati 1098 Engine witz M800 and SDL
Stolle1989
 
Posts: 2
Joined: Mon Jun 07, 2021 8:37 pm

Re: M800 Lambda Long Term Filter

Postby David Ferguson on Mon Jun 28, 2021 8:39 am

In ECU Manager, you will want to connect to your ECU and check the Logging setup. Look at Adjust->Data Logging Setup->Lambda Control. Make sure the values for the Long Term Trims are set to the desired logging rate (value is samples / second). You might also want to log the Short Term Trim and the La Aim Value as well.

Double check that the number of logged channels is less than the 64 channel limit (the L Items value shown below the parameters contains how many channels are being logged).

After you've logged this data, you will download the logged data (Utilities->Get Logged Data), and use I2 to look at the logged data.

Hope this is helpful. YOu will find some useful webinars on tuning your ECU here:
https://www.motec.com.au/webinars-view/ ... gineTuning
You should specifically look at this one on tuning with logged data:
http://www.youtube.com/watch?v=aro9b4gnzps&hd=1
David Ferguson
Veracity Racing Data
Check out Shift RPM - https://shiftrpm.veracitydata.com
David Ferguson
Pro User
 
Posts: 1010
Joined: Fri Nov 07, 2008 1:45 am
Location: Paso Robles, California


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