FT500 SFI / FT500LITE SFI
11
4.4 Auxiliary outputs
As FT500’s outputs can be set up in many different ways, they
have different capacities according to the function. Bellow is
some important information about them:
Blue outputs [#1 to #8]:
by standard, used as injector outputs. Each
one of them can control up to:
-
6 saturated injectors impedance above 10 Ohms (maximum of
12 injectors considering all of the blue outputs)
-
4 saturated injectors impedance between 7 and 10 Ohms
(maximum of 8 injectors considering all of the blue outputs)
The use of a Peak and Hold driver is mandatory when the number of
injectors is higher than the maximum quoted above or when using
low impedance injectors (impedance below 7 Ohms).
During the Engine Setup configuration, blue outputs will be selected
automatically from Blue #1 to Blue #8.
When more than 8 injector outputs are needed, the ECU will use Gray
#1 to Gray #8 or Yellow #1 to Yellow #4. In this case, the use of a
Peak and Hold driver is mandatory on Gray and Yellow outputs (for
saturated and low impedance
injectors).
Blue outputs not used to control fuel injectors may be used as auxiliary
outputs (controlling fuel pump, cooling fan, etc.). In this case, the use
of a relay is mandatory.
Gray outputs [#1 to #8]:
by standard, used as ignition outputs.
According to the engine setup, they can be set up as injectors or
auxiliary outputs.
During the Engine Setup configuration, ignition outputs will be selected
automatically from Gray #1 to Gray #8. It’s not possible to have more
than 8 ignition outputs.
Gray outputs not used for ignition control can be set up as injectors
outputs (the use of a Peak and Hold driver is mandatory) or as auxiliary
outputs (the use of a relay is mandatory).
Yellow outputs [#1 to #4]:
by standard, they’re as electronic throttle
control (Yellow #1 and #2) or stepper motor control (Yellow #1 to #4).
Yellow outputs not used for electronic throttle control can be set up
as injectors outputs (the use of a Peak and Hold driver is mandatory)
or as auxiliary outputs (the use of a relay is mandatory).
Tach output: by default, it is configured in the gray #8, but if this
pin is needed for other function, we recommend to use one of the
yellow outputs for tach. If the yellow wires are being used, you can
use any other output with a 1k ohms pull-up resistor connected from
the signal to 12V.
4.5 Internal MAP sensor
This ECU is equipped with an internal MAP sensor. Use a
6mm
pneumatic hose (4mm internal diameter)
to connect the sensor to
the intake manifold. Pneumatic hoses are flexible, durable and highly
resistant. Usually found in black or blue colors.
Silicon hoses are not recommended because they can be easily bent,
blocking vacuum/boost readings on the ECU MAP sensor.
Use a hose exclusively for FT MAP sensor, avoiding splitting it with
valves, gauges, etc. Connect it to any spot between the throttle and the
engine head. Its length must be as short as possible to avoid lags and
errors on the sensor readings. When using individual throttle bodies,
it is a good idea to connect all intake runners into a single point and
then connect to the FT MAP sensor; otherwise, MAP readings may
be erratic or inaccurate.
4.6 USB port
The USB cable is used to update the ECU firmware version, setup
maps and adjusts trough a computer and FTManager software and
download data recorded by the internal datalogger.
4.7 FuelTech CAN network
FuelTech CAN port is a 4 way connector placed on the back of the
ECU and is responsible for FT500 / FT500 LITE communication
with other FT modules (as KnockMeter and GearController) and
Racepak dashboards. A FuelTech CAN-CAN cable is used to establish
a connection between them.
Characteristics
