Well, I just compared the Speedmaster (31096) maps to the Thruxton maps (30035): the AFR there is 14.5 all the way up to 5780 RPM. Perhaps that's not so lean after all? Once again, my ignorance knows no bounds...

Cheers,

Chris

 

There’s no point playing with the afr map. The ecu completely ignores changes to it.

 

You're kidding?! How is that possible Westfield? What have I missed?

Cheers,

Chris

 

Do a search and it'll come up. Only changes to F and L tables work, not AFR table. It makes sense though as the bikes have narrow band O2 sensors and those can only see 'stoich' or 'not stoich', nothing else. Also changes to F and L around idle won't work.

 

Morning Westfield - so I've done a video. What have I said that's wrong (i.e. that you can adjust all cells in a map)?

Cheers,

Chris

 

Hi, to add more information - maybe does not help, I have just purchased and used TuneECU to help with the brake bleeding the ABS module - All worked well.

When I connected TuneECU to my 2018 T120 it came up with a warning that the Software was out of date - bike was on version 05, latest version is 06. As you maybe already know TuneECU cannot read the current revision on the bike and store it on your device - some might say as a backup :O

I asked on this forum if anyone had a version 05 of the map 30029 (T120 map) a member called Douglas was kind enough to share a copy of version 05 stating when doing a compare in TuneECU between version 05 and 06 there is NO difference... i.e the MAP info presented in TuneECU is exactly the same BUT the 2 hex files are a different size and when you look at the HEX detail in the files they are not the same.

As I had the backup I have upgraded to version 06 - all good. I have noticed a difference - when running the bike and blipping the throttle it takes much longer to settle down to tick-over, like 30 seconds... this was not the case in Version 05.... As the ECU does some @learning@ I have not reverted back and will ride the bike to give it chance to learn again...

BTW, I have not tried to load version 05.

Hope this helps, and if anyone is wise enough to explain/ understand/ share what the differences between ver 05 and 06 is I would be very interested.......

All the best John

 

Hi, to add more information - maybe does not help, I have just purchased and used TuneECU to help with the brake bleeding the ABS module - All worked well.

When I connected TuneECU to my 2018 T120 it came up with a warning that the Software was out of date - bike was on version 05, latest version is 06. As you maybe already know TuneECU cannot read the current revision on the bike and store it on your device - some might say as a backup :O

I asked on this forum if anyone had a version 05 of the map 30029 (T120 map) a member called Douglas was kind enough to share a copy of version 05 stating when doing a compare in TuneECU between version 05 and 06 there is NO difference... i.e the MAP info presented in TuneECU is exactly the same BUT the 2 hex files are a different size and when you look at the HEX detail in the files they are not the same.

As I had the backup I have upgraded to version 06 - all good. I have noticed a difference - when running the bike and blipping the throttle it takes much longer to settle down to tick-over, like 30 seconds... this was not the case in Version 05.... As the ECU does some @learning@ I have not reverted back and will ride the bike to give it chance to learn again...

BTW, I have not tried to load version 05.

Hope this helps, and if anyone is wise enough to explain/ understand/ share what the differences between ver 05 and 06 is I would be very interested.......

All the best John

Did you do the reset adapt followed by idling for 15 minutes after loading 6, as per the instructions?

 

Haven’t looked at your video but I probably didn’t explain very well. You can change the afr table all you want and the numbers can be saved to ecu. However, the fuel mixture will not change. You can fill out the complete table with 10’s or 18’s and it’ll still run just like before.
Fuel mixture will change when modifying the F or L tables though.

 

I find that hard to believe. Have you confirmed this on a dyno? If the AF table doesn’t do anything, why does it exist?

 

Here’s how fueling on these bikes works. The F fuel table values are mg of air times 20 as a function of throttle plate position (TP %) and rpm. The L tables are the same except MAP (manifold pressure) is used instead of TP. The FL switch table gives the TP above which the F tables are used. For the T120, it’s 4%. The value in either fuel table is divided by the corresponding value in the A/F table to get mg of fuel (x20) to deliver. The injectors have a flow rate constant (mg per millisecond). With mg of fuel from the fuel and A/F tables and the injector constant, the ECU calculates the duration of the fuel pulse. There’s an area of the A/F tables where the value’s are all 14.5. This is basically the stoichiometric A/F for this bike. When the value is 14.5 and the throttle is steady, ie., minimal load on the engine, the ECU goes into closed loop and uses the O2 sensor to “intervene” and either make it richer or leaner. That’s it in a nutshell.

 

Doug, this is really interesting but brings more questions / clarifications.
The answer to the calculation brings back a number, I assume this is time milliseconds? When I do the calculation I get results ranging from 1600 to 22000

If you changed the F-L Switch to 100% it would not even look at the F tables? (Not that you would ever want to do that)
Also do you know why F1 vs F2 and L1 vs L2 are different as the 1 & 2 relate to the cylinders.

Then there are the other tables:
I - I think is ignition timing (for different gears)
ETV - Electronic Throttle Valve and there is a table for each gear and each mode ( T120 has 2 modes rain and road)
AFR - AIr Fuel Ratio, per the calculation you explained earlier.
Idle - adjusts target idle RPM at different temperatures

Do you know how the other tables affect the performance?