FT500 SFI / FT500LITE SFI
25
Engine settings
An important tip is that, when selecting “No Actuator”, it is still possible
to control idle speed by ignition timing as configured in the “Other
Functions” then “Idle Speed” menus. If any kind of actuator is selected,
the idle speed by timing control is automatically enabled. This happens
because the idle speed control was specially developed for this FT500
/ FT500LITE, integrating the timing control with the actuator reactions
Electronic throttle
Select this option, then go to “Idle speed control settings”, under
“Other Functions” menu.
Check Chapter 19.2 of this manual for more details.
PWM Valve
After selecting this option, it will be necessary to set up the output
connected to the valve and the control frequency. Small valves usually
use up to 2000Hz. For big valves use around 100Hz. If your valve
becomes noisy, that means the control frequency is lower than what
the valve requires. In this case, increase the control frequency.
Be aware that the only outputs that can control these kinds of valves
are the yellow ones.
Idle actuator 1/4
PWM valve
Stepper motor
Electronic throttle
None
Output selection
Test output:
Test
Idle actuator 2/4
Yellow 1:
valve
PWM
Yellow 2: Available
Yellow 3: Available
Yellow 4: Available
Frequency
1700
Reference: Small valves
usually uses up to 2000Hz.
Bigger valves usually uses
between 50 and 100Hz.
Idle actuator 3/4
Hz
Idle actuator 4/4
Fully open actuator for
over 90%
TPS
Enabled
Disabled
Stepper motor
In this option, the four yellow outputs are used. It is necessary to
inform which output controls which step motor output and the step
motor type. There are predefined actuators for VW and GM models
(number of steps) and a “Custom” mode that allows the configuration
of steps. As there are many variables in the manufacturing process,
Idle actuator 1/4
PWM valve
Stepper motor
Electronic throttle
None
Output selection
Idle actuator 2/4
Yellow 1: Step motor 1A
Yellow 2: Step motor 2A
Yellow 3: Step motor 1B
Yellow 4: Step motor 2B
Test output:
Test
Idle actuator 3/4
Numbers of
steps
280
Stepper motor type
GM (210 steps)
Custom
VW (260 steps)
Idle actuator 4/4
Fully open actuator for
over 90%
TPS
Enabled
Disabled
The option “Fully open for TPS over 90%” fully opens the idle valve
when TPS is above 90%, increasing the air admitted.
7.7 FuelTech base map
With the “Engine Setup” menu fully set up, the next step is to generate
the FuelTech base map, a function that generates fuel and ignition
maps to be used as a start point for the engine tuning.
The window below is displayed at the end of configuration assistant
in the FTManager:
if you’re experiencing difficulties at idle tuning, check the “Custom”
mode and change the number of steps. In some GM step motors, 190
is the correct number. For some VW step motors, 210 works better.
When generating a base map in the touchscreen interface, the
informations are displayed as the follow images:
File Manager 2/2
Generate FuelTech base map
Edit map file name
Copy map to another file
Erase file
FuelTech default map
Compression ratio
High
Medium
Low
Fuel type
Race gas
Pump gas
E85
Ethanol
FuelTech default map
Injectors total flow
Primary
320
lb/h
Total flow is the sum of injectors
flow at the bank.
Example: 4 injectors with
80 lb/h has 320 lb/h
total flow
FuelTech default map
Secondary injectors
total flow
640
lb/h
Initial boost for
secondary injectors
0.50
bar
High profile
Low profile
Camshaft profile
FuelTech default map
This operation will erase
previous settings.
Are you sure?
Generate FuelTech base map
FuelTech default map
