FT500 SFI / FT500LITE SFI
68
Other functions
Select an auxiliary output as “Progressive nitrous output” and how
the control will be performed: by time (after 2-step), by rpm or by
wheel speed.
Also, select the enable mode:
•
Always enabled;
•
External switch:
select a white input. When the input is grounded
the progressive nitrous will be enabled;
•
Dashboard switch:
a touchscreen button must be configured
to enable or disabled the progressive nitrous;
•
Synchronized with Pro-Nitrous:
the progressive nitrous control
will activate when the Pro-Nitrous (Drag race features menu)
conditions are met;
Progressive nitrous control 1/20
Yellow 1: Avaliable
Yellow 2: Avaliable
Yellow 3: Avaliable
Yellow 4: Avaliable
Output selection
Test output:
Test
Disabled
Enabled
Speed based control
Time based control
RPM based control
Progressive nitrous control 2/20
Synchronized
with Pro-Nitrous
Progressive
nitrous arm switch
Dashboard switch
Progressive nitrous control 3/20
Enable progressive nitrous
Always enabled
The first parameter to be configured is the TPS opening percentage,
above which the injection of nitrous will be activated.
The next parameter is the percentage of fuel enrichment for 100%
nitrous.
After this, set the PWM output frequency and the output signal. To
regular solenoids, use between 25 and 30Hz, big shot solenoids use
50Hz. The next screen will show the engine temp protection, where
you can define a minimum engine temperature for progressive nitrous.
Progressive nitrous control 5/20
TPS for 100%
of nitrous:
95
%
TPS for 0%
of nitrous:
10
%
Progressive output
PWM frequency
15
Hz
Activated at 12V
Activated at 0V
Output Signal
Progressive nitrous control 6/20
75
°C
Disab.
Enad.
Nitrous PWM
for 2-step
0
%
Progressive nitrous control 7/20
Disable Nitrous when
engine temperature under:
The fuel enrichment for 2-step is a fuel compensation when the
2-step is enabled. The timing retard for 2-step is a compensation
applied to the timing configured in the 2-step function. The minimum
and maximum RPM is a RPM window and work as a safety feature,
so the progressive nitrous will only active if the engine rpm is inside
the window. The total time to return PWM control is a delay ramp to
reactivate the progressive nitrous when it is disabled by any safety
features or switch. This ramp avoids the progressive nitrous to return
in a big shot, helping the traction on pedaling.
+75,0
%DC
Timing retard
for 2-step
-5,0
°
Progressive nitrous control 8/20
Fuel enrichment
for 2-step
0
RPM
Maximum RPM
for activation
8000
RPM
Progressive nitrous control 9/20
Minimum RPM
for activation
0,00
s
Progressive nitrous has 3 safety
parameters: TPS, RPM and Switch
When nitrous is turned off and
then turned on again, it is
recommended this return to be
progressive, reaching the
maximum programmed PWM
only after the time set here.
Progressive nitrous control 10/20
Total time to return PWM control
Next is the nitrous injection map based on RPM. The higher the
percentage configured in this map, the higher the amount of nitrous
(or n fuel) injected
The maximum RPM is the same chosen on “Fuel Injection Setup.
With the FTManager you can edit axis and add or remove cells.
When using 2 injector banks the fuel enrichment will happen on both.
Fuel enrichment by %PWM 14/20
0%
+50,0
%DC
+75 lb/h
Progressive nitrous control 13/20
0,00
S
Delay to start fuel
compensation
Nitrous: Enrichment 15/20
6000
RPM
5000
-0,70
%
+
-
+10
+20
+25
-0,80
bar
+15
0,000
+1
+0
+5
+45
+25
7000
-0,90
The ON delay for NOS fuel compensation avoids the extra fuel to get
earlier than the NOS in the cylinder, very commom when the fogger
is far from the injectors.
