Lingenfelter Launch Control (2-step)
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Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
RPM limit activation The PCM isn't really involved in the activation of the LNC-002 (or LNC-001 or LNC-003).
LNC-002 has two activation wires - a yellow 12v and a green ground. You can trigger it with either one. You can trigger it with almost any type of switch or combination of switches you want. The factory PCM RPM limiter does not need to be reached for ours to become active. Actually you don't want to reach the factory one before you reach ours (normally you would have the PCM/ECM set for some other RPM that is higher than the LNC setting).
If you just want the LNC-002 to be an RPM limiter all the time (in place of/addition to the factory one) then you can just connect the two trigger wires together (yellow to green) and it will always be active. The connectors on the wires are already mating connectors (male/female) so it is easy to do.
Some of the other possible trigger methods would be:
The instructions have several possible wiring options and others have been discussed on the forums.
I hope this helps.
LNC-002 has two activation wires - a yellow 12v and a green ground. You can trigger it with either one. You can trigger it with almost any type of switch or combination of switches you want. The factory PCM RPM limiter does not need to be reached for ours to become active. Actually you don't want to reach the factory one before you reach ours (normally you would have the PCM/ECM set for some other RPM that is higher than the LNC setting).
If you just want the LNC-002 to be an RPM limiter all the time (in place of/addition to the factory one) then you can just connect the two trigger wires together (yellow to green) and it will always be active. The connectors on the wires are already mating connectors (male/female) so it is easy to do.
Some of the other possible trigger methods would be:
- clutch switch (factory or additional switch)
- brake switch (factory or adjustable pressure/limit switch)
- momentary switch
- MPH switch (for example, our STOV-001)
- TPS switch
The instructions have several possible wiring options and others have been discussed on the forums.
I hope this helps.
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Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
Just noticed this post and picked up an LNC-003 on your eBay store, been waiting a while for these to come out.
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Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
resistor plugs You should run resistor plugs in almost any EFI system or any system with electronic controls. Failure to do so can cause electronic noise that can cause control system problems. You MUST use resistor plugs and wires with the LNC-002 and the LNC-003.
If these are NGK TR8 plugs, I am fairly certain they are a resistor plug. The the "R" in the TR series plugs denotes a resistor plug in the NGK plug numbering system.
If these are NGK TR8 plugs, I am fairly certain they are a resistor plug. The the "R" in the TR series plugs denotes a resistor plug in the NGK plug numbering system.
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Verdad Gallardo LS1Tech Sponsor
Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
Install time Connecting the coil packs takes less than 5 minutes. Mounting the LNC to the vehicle probably takes 5 to 20 minutes depending on where you want to mount it, how you mount it and if you move anything to mount it in place. Those two items are the easy part of the installation.
How you trigger it is the harder part and could be the more time consuming part and might be the part that some people feel less comfortable connecting.
Depending on your trigger method it will probably take 30 minutes to 1 hour to wire up that portion of the system.
Maybe some customers can give feedback on how long it took them to install.
How you trigger it is the harder part and could be the more time consuming part and might be the part that some people feel less comfortable connecting.
Depending on your trigger method it will probably take 30 minutes to 1 hour to wire up that portion of the system.
Maybe some customers can give feedback on how long it took them to install.
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Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
If you are using an auxiliary fuel control system (additional injectors etc.) then you probably don’t want to use the factory fuel-cut based engine RPM limiter because if the two don’t cut off at the exact same instant you can run lean and damage your engine. The LNC-003 is a spark based RPM limit.
Some people also like to have different RPM settings for the burn out and for the lights so the two different RPM limits could be used in such an application.
I am sure other customers may have additional reasons for wanting two different RPM limit settings.
Some people also like to have different RPM settings for the burn out and for the lights so the two different RPM limits could be used in such an application.
I am sure other customers may have additional reasons for wanting two different RPM limit settings.
i have the lnc-003. i use the first limiter on the footbrake to get 2 psi in the prestage area and then ease in to stage and go on the brake and the second limiter.....kije Borat would say "very niiice"
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Joined: Feb 2005
Posts: 319
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From: Glen Allen, VA
Not sure if anyone is interested, but here is how I am activating. I'll have a master arm switch. Then I fabbed a bracket to mount to my shifter base. The microswitch is only activated in 1st gear.
'03 C5Z with Kirban shifter
'03 C5Z with Kirban shifter
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Joined: Feb 2005
Posts: 319
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From: Glen Allen, VA
I think I have this right, if not, someone speak up.
From the LPE-002:
leave ground from LPE-002 disconnected
12volt ignition wire ---> master toggle switch ---> momentary microswitch on shifter base ---> relay & stock clutch switch (cruise control switch - this switch is closed when clutch pedal is depressed) ---> 12v yellow on LPE-002
So, I turn on the master toggle switch.
Get into 1st gear
Light the staged bulb
Clutch is pushed in
Floor the throttle and the 2 step limits the RPM to set value
When I release the clutch, the 2 step is de-activated so I can get WOT
When I push clutch in and pull into 2nd gear the switch on the shifter de-activates the 2 step for the rest of the pass
The only thing I'm not sure about is what happens to RPMs in the 1-2 shift. I do not WOT shift the 1-2 shift. If you do, I'm guessing the 2 step will activate, pulling RPMs back to set point.
Last edited by clemsondave; Mar 31, 2009 at 06:48 PM.
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Joined: Jan 2007
Posts: 127
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From: CT
Well.. I had some trouble wiring mine in the GTO.. Come to find out, in that tight little space there are two clutch switches.. The front one that I was using is for cruse control.. So tomarro I will hook it to the right swutch and be off to the races next Sat..
i just need it to turn on when my clutch is in, and limit my rpm, it will be used for na launches and the nitrous will kick in once i get going. so what one should i buy, cheaper the better
Lnc-002 I've read in the LNC-002 manual that due to the cut in spark and not fuel that it is not recommeded on cars equipped with catalytic converters.
I have a street car that passes emissions, so I have to run cats on my car...
But, only making a 5-6 track visits per year and knowing to only mat the throttle when both lanes are staged (so the time exposer would be minimal) is this something I really need to worry about?
Granted, I don't want to ruin a cat after the first track visit with this little device... but would that really happen?
I have a street car that passes emissions, so I have to run cats on my car...
But, only making a 5-6 track visits per year and knowing to only mat the throttle when both lanes are staged (so the time exposer would be minimal) is this something I really need to worry about?
Granted, I don't want to ruin a cat after the first track visit with this little device... but would that really happen?