Fast 30400-KIT-EZ-EF, Instructions Manual

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0, the TPS should be re-calibrated. This can be done by selecting TPS Calibration from the
Advanced menu.

It is normal for fuel pressure to rise and fall with varying engine load. Fuel pressure will be
lower at idle and in normal driving when there is 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.

With a return style fuel system, the fuel pump will run for several seconds after key-on to
prime the fuel system. With a returnless fuel system, the ECU will only run the pump as
much as it needs to in order to reach and maintain the target fuel pressure. The pump may
run for different lengths of time at any given key-on. It may not run at all in some cases. All
of this is normal with a returnless fuel system.

There is some adjustability built into the linkage between the throttle shafts. It should be set
up as close to a one-to-one arrangement as reasonably possible – as opposed to a progressive
setup. Having all four blades open at the same time gives the best fuel distribution.
EZ-Test Indicator Lights
The EZ-EFI
®
ECU features a series of LEDs that can be used to monitor its operation and to signal if
the on-board diagnostics has detected a problem.
LABEL COLOR DESCRIPTION
DURING
NORMAL
RUNNING
CRANK/DIAG Blue
Indicates that the ECU is receiving a crank signal and is reading RPM. If
the on ‐ board diagnostics has detected a problem, this LED will flash
rapidly. If that happens, refer to the Codes screen in the Diagnostics
section of the hand ‐ held to determine what code has been set.
Solid
POWER Green
Indicates that the ECU is powered on. This LED should remain on
whenever the vehicle is keyed ‐ on. After the vehicle is keyed ‐ off, this LED
will remain lit for several seconds and then fade out. This is normal and
indicates that the ECU is going through its proper shut down procedure.
If this LED goes out immediately at key ‐ off, there is a problem. The most
likely cause is that power to the “BATTERY POS” wire is being lost at the
same time as the 12V switched source. If the ECU does not shut down
properly, new learning, new user adjustments and other internal
information will not be retained by the ECU.
Solid
SW IGN Green
Indicates that the ECU is receiving a 12V switched input. This LED should
remain on whenever the vehicle is keyed ‐ on ‐ including during cranking.
Losing the 12V switched input during cranking can lead to a host of
starting and running issues. If this is happening, a different 12V switched
source must be found. This LED should go out immediately at key ‐ off.
Solid
INJ A
Orange
Indicates when each injector output is active. These will start to appear
more solid as RPM increases.
Flashing
INJ B
INJ C
INJ D
POINTS Red
Indicates that the ECU's ignition output is active. This LED will still be on
even if the EZ ‐ EFI® is not set up to control timing.
Solid