Fast 30400-KIT-EZ-EF Instructions Manual - page 57
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Master Dash
The Master Dash is designed for easy viewing of all sensors and user accessible values. For example,
this dash may be used as an overview to quickly verify that all sensors are reading expected values.
Also note that the ignition timing-related values are given along the bottom of the Master Dash – the
three component parts as well as the end result.
Base Timing + Idle Adv + Vacuum Adv = Total Timing
DATA LABEL
DESCRIPTION
AFR
Air/Fuel Ratio. The reading from the wideband oxygen sensor.
Air Temp
This is the temperature of the air entering the throttle body. It can be displayed in
either Fahrenheit or Celsius.
Base Timing
Ignition timing value taken from the main RPM‐based timing curve. This makes up
one part of the final timing value the engine sees.
Base Timing + Idle Adv + Vacuum Adv = Total Timing
Timing related data is only valid when EZ‐EFI® is controlling timing.
Battery
Battery voltage.
Coolant Temp
This is the temperature of the engine. It can be displayed in either Fahrenheit or
Celsius.
FP DC %
Duty cycle of the fuel pump control output. With a returnless‐style fuel system, this
goes up and down to raise and lower fuel pressure. With a return‐style fuel system,
this remains at 100% when the fuel pump is running.
Fuel Pressure
Fuel pressure in psi. It is normal for this to rise and fall with varying engine load. Fuel
pressure will be lower at idle and in normal driving when there is the more vacuum in
the intake manifold. Fuel pressure will rise as the engine approaches wide open
throttle. This is true of both return and returnless style fuel systems.
IAC
Idle Air Control. This is the position of the idle motor. At idle, it will move around to
maintain the target idle speed. Displayed in “counts”. Higher counts mean the idle
motor is open more and allowing more air to bypass the throttle blades. Its range is
from 5 to 180. Generally, this will be around 20 idling out of gear with a fully warmed‐
up engine.