Lingenfelter L460105297 Lingenfelter LNC-003 Dual RPM Launch Controller v2.7 - Manual (Page 6)

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Launch Control/2-Step Features
The independent coil drive of the LNC-003 provides sequential ignition kill when RPM limiting is
active. The desired RPM limiting is set as shown on page 3. The activation for the Primary RPM
setting of the Launch Control/2-Step function is controlled by the ground (green) or +12 volt (yellow)
activation wires. The activation for the Secondary RPM setting of the Launch Control/2-Step function is
controlled by the +12 volt (orange) activation wire.
If you are triggering off of the clutch switch, the 2-Step will trigger each time you depress the clutch
pedal. This can be used to provide an ignition cut/torque cut on each gear change to potentially allow
for faster shifts/faster clutch engagement.
If you do not want the 2-Step to trigger when you engage the clutch pedal once you are moving then
you will need to install a momentary switch or use the Lingenfelter MPH activated switch. With the
MPH activated switch you can set at what MPH you want the 2-Step activation to be disabled.
Additional Notes
Important Information regarding spark plug wires and spark plugs:
You must use noise suppression ignition wires AND resistor type spark plugs with this Controller. The
LNC-2000 Controller contains High Frequency Digital Electronics and will NOT function correctly
without Noise Suppression Wires or resistor type spark plugs!
Note about manual transmission clutch switch/position sensor on GM vehicles:
• On manual transmission vehicle applications please note that most GM vehicles have two clutch
switches (a cruise control switch at the top of the travel and a neutral safety clutch switch at the
bottom of the travel). Make sure you are connecting to the correct one. In testing LPE has found that
the upper clutch switch (cruise control switch) has erratic output and causes improper operation of
the LNC. The wiring diagrams on the following pages show how to connect to the correct clutch
switch. On the 2008-2013 Corvette, 2010-2014 Camaro and 2009-2014 CTS-V GM has switched to
a single clutch position sensor with an analog 0-5 volt output. The output of this sensor is actually
from high to low. The clutch position sensor will not trigger the LNC directly or most relays and a
TPS/clutch switch must be wired in on the vehicles. This can be done using the LPE CTAP-001 (PN
L460190108) or you can add a microswitch to the clutch pedal assembly.
• On GM manual transmission vehicles with the two clutch position switches, the lower clutch switch
is the switch that should be used to trigger the LNC. The problem, however, is that the lower clutch
switch is powered by a circuit that is only energized while the vehicle is cranking. For the LNC to
work with the lower clutch switch, a relay must be added before the switch in order for the switch
to be powered while the vehicle is running. Refer to the clutch switch wiring diagram on page 7 for
instructions on how to modify the circuit correctly.