Figure 63 Figure 64
30.1.3 Fuel Prime
Fuel prime is an option that is enabled by default in all of the base calibrations. The fuel prime function injects a small shot of fuel into the
intake manifold when the ignition is turned on, wetting the intake and allowing the engine to start much quicker. The amount of fuel is
based on the engine temperature and how long it was since the engine previously ran. This amount of fuel can be increased or
decreased by changing the “Percent” value. If the engine seems flooded reduce this value, if the engine seems to want more fuel,
increase it. Experiment for best results. Typically this value will range from 75-150% with a maximum of 200% typically used.
Figure 65 Figure 66
Figure 67
NOTE: This only injects fuel once at key-on, and will not do it again until the engine has run. This fuel prime occurs ½ of a second after
key-on. If you quickly turn the ignition key without waiting for ½ a second, the prime will not occur and it may take longer for the
engine to start.
30.2 Fuel Learn
30.2.1 Learn Enable/Disable
The LEARN Enable / Disable menu turns the Self Tuning “On” and “Off”. If enabled, self-tuning is performed. Learning should be enabled
when an engine is just started and the tuning process is occurring. After the vehicle is driven under various operating conditions, and is
running well, it is advised to disable learning, OR slow the Learn Speed to “Slow”.
To Next Page