Definition: mulitplies the a/f values of the "fuel stabilized table" under WOT. "WOT Fuel Multiplier vs RPM" x the "Fuel Table - Base OL" is the commanded a/f at WOT.
Platform:
Min Value: values < 1 make it richer, > 1 leaner)
Max Value:
Description:
Hints:
(note: if you are lean due to the small injectors this won't do squat)
First number is RPM and second number is multiplier.
Increase multiplier value of 1 to decrease injector pulse width (less fuel)
and decrease the number under 1 to increase the injector pulse width (more fuel).
You can also change the RPM value to add or remove fuel at any RPM. Note:
The EEC calculates WOT by WOT TPS BREAKPOINT VOLTAGE. To get WOT TPS BREAKPOINT VOLTAGE,
the EEC takes the voltage at closed throttle when the key is turned on.
It then takes this voltage and subtracts it from the actual voltage from
the sensor to get voltage relative to closed throttle. This voltage is then
converted into A/D counts from 0 to 1020. If you have .8 volts at closed throttle,
and actual voltage from the sensor is 2.8 volts, you subtract .8 from 2.8 and get 2 volts.
You take 2volts/5 volts (the max possible voltage) and multiply by 1020.
In this example, you get .4 X 1020 or 408 WOT TPS BREAKPOINT VOLTAGE counts.
If you just remember to add the voltage at closed throttle (.8v) to the
WOT_VOLTAGE 2.44144 you get WOT activated at 3.24144v.
The Y value is the one you want to change.
If you look in your open loop fuel table you will find an air fuel ratio
value based on ect vs load. This is what gets mutiplied by the Y value in
the WOT fuel vs. RPM function.
For example 12.5 * .9 becomes an air fuel ratio of 11.25 to 1.
This function is very useful for tuning at a particular RPM range.