AutoTuning
The Autronic Software has the ability to self tune the Base Fuel Tables in real time when
using an input signal from a wide band A/F meter such as the Autronic A or B model
meters.
When in the Base Fuel Table, select the Edit Window tab at the top of the software, and
then scroll down until you can select Setup AutoTune.
This will bring up an Auto-Tune setup window where you can set the parameters for
Auto-Tuning the engine.
The parameters are:
Accuracy: This should be set to 5% for the first rough tuning and can be set lower after
the initial tuning is complete.
Colour Protection: This can be enabled to protect the sites that the software has Auto-
Tuned from being changed later or un-protected to allow changes after Auto Tuning has
been completed.
Initial Map State: This is used to tell the software whether the engine has been tuned
before or if it is a brand new calibration.
Sensor Position: This is used to help the ECU create a time offset for making tuning
decisions. You can select Header, Collector, or Tail Pipe of Car.
Once you have set up the auto tune parameters you can simply run the engine and press
the F5 key to start or stop the Auto Tuning process.
Then simply hold then engine in one load/RPM cell at a time, and the ECU will
automatically sample the A/F ratios and compare them to the Target A/F ratio and then
make changes to the values in the cells until the correct A/F values are found.
Once a cell is tuned close to its accuracy point it will turn Yellow. When it is tuned to be
within the accuracy set point you have selected the cell with turn Green and you can then
move on to the next cell and continue tuning.
When all of the cells you wish to Auto Tune have been completed you can then go back
to the Edit Window and select Set Up Auto Tune to change the accuracy settings to be
finer and then begin the Auto Tune process again for higher accuracy.
When used properly the Auto Tune procedure is by far the fastest way to tune the
engine’s fuel sites.
Once all of your fuel tuning is completed you can begin working on any necessary
adjustments for cold starting, warm-up and acceleration enrichment and deceleration
enleanment. Most times the default values will be very close and will not need much
adjustment.
The best method of Autotuning is to tune one site at 3000 RPM and 100% Load. Then
stop the Autotune and copy this value to all sites in the fuel table other then your idle and
start sites. Then start the Autotune again and always tune a site next to one already
tuned.
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