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4.3 Auxiliary outputs
in many different ways, they have different capacities according to the function.
Below 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.
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]: (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).
4.4 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.
When cutting the hoses, make sure the cut is straight and clean as this may cause leakages
fitting to connect to the intake manifold.
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.
4.5 USB port
The USB cable is used to update the ECU firmware version, setup maps and adjusts trough a computer and FT
Manager software and download data recorded by the internal datalogger.
4.6 FuelTech CAN network
FuelTech CAN port is a 4 way connector placed on the back of the ECU and is responsible for FT500
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.
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