Wilson Manifolds 810100 Progressive Nitrous Controller and Vehicle Data Logger - Manual (Page 10)

Nitrous Pro-Flow, 4700 NE 11
th
St., Ft. Lauderdale, FL 33334 Pro-Flow Part. No. 810100
(954) 771-6216 www.nitrousproflow.com 1/2008
Page 10
Maximum Shift RPM – engine RPM must
momentarily exceed this setting in order for the nitrous
controller to detect a shift from first to second gear
when using the first gear lockout option. If the GPIO is
configured as a shift light output, the GPIO will be
activated when the engine RPM reaches the maximum
shift RPM setting.
GPIO options – one of four options can be
selected based on GPIO hookup (refer to Figure 4):
GPIO Disabled – self explanatory. Select this
option if the GPIO is not used.
GPIO as Shift Light Output – the GPIO will
be activated when the engine RPM reaches
the maximum shift RPM setting.
GPIO as Stage Enable Input – a low signal
level (GPIO grounded) becomes an additional
condition required to trigger stage 1 and/or
stage 2 based on the associated checkboxes.
GPIO as Stage Triggered Output – the
GPIO will be activated (pulled to ground) when
stage 1 or stage 2 is triggered based on the
associated checkboxes. The option is typically
used to retard an aftermarket ignition.
CONTROLLER PARAMETERS
Controller parameters shown in Figure 7
determine stage 1 and stage 2 trigger conditions. All of
the conditions for a particular stage must be meet
for that stage to be triggered on. Controller
parameters include:
Enable – stage 1 and stage 2 can be
independently enabled or disabled. If a stage is
disabled, it is never triggered on. If your system only
uses stage 1, you should disable stage 2.
First Gear Lockout – refer to the minimum and
maximum shift RPM parameters on page 8 for an
explanation of the first gear lockout function.
Minimum RPM and Maximum RPM – RPM
window for triggering the stage. If you are not using the
RPM input, set the minimum RPM to zero and the
maximum RPM to a higher value such as 5,000.
TPS Off – percent value below which the stage
will be turned off. We recommend using a value that is
5-10% less than the TPS On setting for best noise
immunity.
TPS On – percent value for triggering the stage.
If you are using a wide open throttle position switch,
use a setting of 95%.
Minimum VSS and Maximum VSS – vehicle
speed window for triggering the stage. If you are not
using the VSS input, set the minimum VSS to zero and
the maximum VSS to 140.
Delay – time delay (in seconds) from the point
where all the above trigger conditions are meet to the
point where the stage is triggered on.
One-Shot Delay – if this option is not selected,
the stage is delayed every time it is triggered. If the
one-shot option is selected, the delay is only applied
once after the nitrous controller is armed. A one shot
delay is useful as an alternative means of
accomplishing first gear lockout. More information on
this subject is presented in the Operating Tips section
on page 13.
User Data – you can enter up to 32 characters
of user data such as comments that will be saved in
EEPROM memory.
PWM PARAMETERS FOR
PROGRESSIVE CONTROL
Pulse width modulation (PWM) is used for
progressive control. PWM involves rapidly pulsing the
solenoids on/off. The duty cycle (percent PWM)
determines the flow. At zero duty cycle, the solenoids
are always off (no flow). At 100% duty cycle, the
solenoids are always on (maximum flow). The hookup
shown in Figure 2 can be used with time or RPM
based PWM control. The hookup shown in Figure 3 is
used with RPM based PWM control to ramp up power
and balance the air/fuel ratio throughout the RPM
range.
Use the Edit PWM Parameters command on the
Edit menu to access the PWM setup screens shown in
Figures 8 and 9. PWM parameters include:
PWM options – one of two PWM modes can
be selected:
RPM Based PWM – refer to Figure 8. PWM
for each stage is ramped based on engine
RPM once trigger conditions are met.
Time Based PWM – refer to Figure 9. PWM
for each stage is ramped based on elapsed
time from the trigger event for that stage.
One-Shot Timer – this checkbox will be
enabled in time based PWM mode. If this option is not
selected, the PWM ramp timer will start from zero
whenever the stage is triggered. This mode of
operation is useful with a quick (sub-second) ramp up
used to avoid wheel spin after launch or shifts.