Lingenfelter L460145297 Lingenfelter LNC-2001 LS Timing Retard Launch Controller LSA LS9 v1.7 - Manual (Page 9)

Page 8 of 26
Retard Rate settings when using MAP sensor input:
Position Rate
0...........0.2 degrees/psi
1...........0.4 degrees/psi
2........... 0.6 degree/psi
3........... 0.8 degree/psi
4........... 1.0 degree/psi
5........... 1.2 degree/psi
6........... 1.4 degree/psi
7........... 1.6 degree/psi
8........... 1.8 degree/psi
9........... 2.0 degree/psi
A .......... 2.2 degree/psi
B .......... 2.4 degree/psi
C .......... 2.6 degree/psi
D .......... 2.8 degree/psi
E .......... 3.0 degree/psi
F ......N/A (Linear Mode)
Time based retard mode
The retard Rate setting controls how quickly the controller goes to the amount of timing retard set with
the Max Retard switch. For example, if you have the Max Retard switch set to 10 degrees and you
have the Rate switch set to 1 second, after 0.5 seconds you will have 5 degrees of retard and it will take
one second to build up to the full 10 degrees of retard.
Boost retard mode
When using the MAP sensor input, the Rate setting controls how many degrees of retard per pound
(psi) of boost and the Max Retard setting controls the maximum number of degrees retard to allow.
For example, if you have the controller set to 10 degrees with the Max Retard switch (position A) and
the Rate switch set to 3 degrees per pound of boost (position F), then at 1 psi of boost you would have
3 degrees of retard, at 2 psi of boost you would have 6 degrees of retard, at 3 psi you would have 9
degrees of retard but at 4 psi you would only have 10 degrees of retard because you have the maximum
setting with the Max Retard switch set to 10.
When using boost based timing retard the orange retard activation input wire will force the retard to the
maximum retard level setting on the Max Retard switch no matter what the boost level is. This allows
you to use the orange trigger wire to retard timing at the line in order to build boost and then still use
the boost based timing retard as you go down the track.
Timing retard notes:
• When the LNC-2001 is powered up with no MAP sensor installed it will default to Time Based
Retard mode.
• When the LNC-2001 is powered up with a MAP sensor installed it will switch to Boost Retard
mode. The “Max Retard” dial will still set the Maximum amount of retard allowed. The “Rate” dial
will control the degrees of retard applied for each psi of boost applied to the MAP Sensor.