Justin woolich over in Australia has made tremendous progress in a very short timing designing, testing, and implementing auto tune features into ecru editor. There is now the option to add a wideband o2 sensor to the ecu via the stock sensors input at pin 12 at ecu connector and use your laptop to datalog every parameter the ecu can see for later review using the auto tune feature.
You still need basic engine tuning knowledge to decide what target air fuel values you want to shoot for etc, but this feature rocks, and hopefully soon there will be a data logging device that requires no wiring, just plug in and log everything ecu can see.
Instructional thread at https://www.hayabusa.org/forum/busa-mods/137838-ecu-editor-tutorial-how-use-auto-tune.html
You still need basic engine tuning knowledge to decide what target air fuel values you want to shoot for etc, but this feature rocks, and hopefully soon there will be a data logging device that requires no wiring, just plug in and log everything ecu can see.
Instructional thread at https://www.hayabusa.org/forum/busa-mods/137838-ecu-editor-tutorial-how-use-auto-tune.html
I have been getting a few questions about how to use the new Auto Tune feature in ECU Editor so i thought i would do a new post with this info and screen shots to make it easy for people to find the answers to questions. I am assuming you have basic skills with the ECU Editor program, if this is not the case please read other posts about the application to familiarize yourself with how it works before attempting an auto tune.
For best results when auto tuning you will need to block your PAIR valve. There are a couple of ways to do it ranging from using a marble to block the hose to buying pair block off plates and removing the PAIR solenoid entirely. Please search this forum for information about how to do this. The reason you should do this is that the PAIR valve bleeds air from the air box into the exhaust gases which gives you artificially lean (high) AFR readings.
Configure your bin file to Datalog O2 Sensor
- Open your bin file in ECU Editor
- Click "Advanced Settings"
- Put a check in the "Datalog O2 Sensor" checkbox and un-check "PAIR" checkbox
- Flash the changes to your ecu
You are now ready to do a Datalog to measure the current state of tune of your bike
- Connect your flashing harness and put it in Engine Data mode
- Turn your key on
- Click the "Data Logging" button
- Make sure that the green light comes on and the data logging screen is showing basic engine data.
- Start your engine
- Click "Create Log File" button
- Save the log file to a common location on your laptop
- Click "Start Logging" to start logging data to the log file
- Go for a ride and log data to the log file, i generally go for 20 min or so to get a good amount of data.
- Stop Engine and Click "Stop Logging"
- Click "View Data Log" button
- You are now viewing the logged data from your ride, you can change between the TPS-RPM and IAP-RPM maps by selecting the relevant radio buttons
- You can change the Target AFR maps by clicking on the Target AFR map radio button
- When you are ready to Auto Tune click the "% Map Change" radio button, this map displays suggested values to use to modify your fuel maps to improve the tune of your bike, you are able to adjust the values by typing directly into the cells if you are not happy with the suggested values.
- When you are ready to apply the changes to your fuel map click the "Auto Tune"button.
- If you want to tune both maps you will have to select each map (TPS and IAP) and click the 'Auto Tune' button for each one.
- Flash the changes to your ecu
- There are some additional settings to filter the Data Logs and Auto Tune which are pretty self expanitary, basically they remove data that is not useful for tuning your bike, the default settings are a good start but feel free to experiment with the settings to see what impact they have on the functionality of the software.
You will need to go through the log and tune process a few times until the values stabilize and you are getting consistent results for your AFR logging. Remember to save your bin file each time and load the latest bin file before you apply changes from a log run. I usually create numbered directories e.g. 01 Justin and put both the bin file and data logs for that bin file in the directory so i know which data logs relate to which bin file.
The engine uses the IAP-RPM map when the TPS (Throttle Position Sensor) settings is below 11% i.e. at cruise and idle, Above TPS 11% the ecu uses the TPS-RPM map.
