Lingenfelter L460240000 Lingenfelter NCC-002 Nitrous Control Center v1.5 - Manual (Page 161)

Appendices 160
9.2 Appendix B: Nitrous and Fuel Operation
Progressive Ramp—This adjustability allows the user to tune for rich/lean conditions at different points in the
progressive ramp. Multiple precision timers are included to delay the start of nitrous delivery, advance the fuel
delivery, and to provide an additional +12 volt output to control external devices. A resume ramp has been
included so throttle lift transitions and/or gear change transitions can be controlled.
Arming—The system is armed when either a ground or +12V signal is present on the arming terminals. Once
armed and all other activation criteria are met, the Main Timer begins counting down and is displayed on the
main screen. If the Hold & Wait option is ON the system timers will NOT reset if the activation signal is removed
(i.e.- throttle lift). If the Hold & Wait option is OFF the system will reset and start over each time the arming
signal is removed and re-applied.
Nitrous Delay—If this function is set the nitrous timers will NOT begin until this time delay has expired. Each
stage has a separate timer delay setting.
Fuel Advance—After the nitrous delay has timed out this setting is checked. If a fuel advance time has been set
the fuel solenoids will begin operation before the nitrous solenoids. For example if a lean spike was occurring
the system could be programmed to deliver a 80% fuel pulse .050 second before the first nitrous solenoid pulse.
It is recommended to check nozzle flow and total volume flow to insure correct fuel delivery.
Nitrous/Fuel Progressive Ramp—Once armed and the delay and fuel advance timers have expired, the system
will pulse the solenoids as programmed. The nitrous and fuel use independent data to allow greater control.
When the end of the progressive ramp is reached the system will use the last percentage in the progressive
ramp until the main timer expires. When the main timer has expired, the only way to reset the system is to
remove the arming signal.
NOTE: It is important to note that the data log, once started, will continue to log data until the 25 seconds is
elapsed, even if the Main timer is reset and started again.
Resume Ramp—This setting controls the Percentage that the system returns to after a throttle lift on the next
Solenoid Pulse. Example-the system is at 80% and the throttle is lifted and re-applied, if the Resume Start
Percent was set at 50% the first pulse would be 40%. The Resume Ramp will increase at the rate of the
Resume Percent Per Pulse setting until the system returns to the Percentage it was at before the throttle lift. If
the Fuel and Analog Out settings are at a higher and/or lower setting they are scaled so they resume at the
same rate as the Nitrous Solenoids.
+12 Volt Timer Output—If a setting of 0.000 is entered the Timer Output will turn ON with the First Pulse of the
Nitrous Solenoid. This output can NOT be disabled and the user must remove any wires connected to the
Output terminal to disable any device connected.