Backfire after lingenfelter lnc2000
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10 Second Club
Joined: Feb 2012
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Backfire after lingenfelter lnc2000 So I installed my LNC 2000 timing retard. It's set to pull 4 degrees when my nitrous is armed. I can tell it's working correctly due to the light only coming on the box when the nitrous is armed. When it's off, I get some pretty violent backfiring after a long pull of between high rpm shifts. Is this bad? It's loud as hell and only after the timing box was plugged in. Car runs fine, just have some flames now. Also the car has the launch control feature hooked up, wired to the clutch. So I'm not sure if it's bad or just normal. Duals dumped, no cats.
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Joined: Oct 2002
Posts: 603
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From: Decatur, IN
backfire in exh with LNC If I understand your description correctly you have the launch control activated by the clutch switch. That means on a shift the launch controller will be active trying to achieve the target RPM setting. It will do this by performing a spark cut during the shift. Since the injectors are still firing that fuel is the likely cause of the backfire event on the shift. The longer the shift the more likely this is to happen.
If you don't want this to occur on the shifts you will need to disable the launch control once you are moving. You can do this with a manual toggle switch or you can use our MPH activated switch.
If you don't want this to occur on the shifts you will need to disable the launch control once you are moving. You can do this with a manual toggle switch or you can use our MPH activated switch.
So I installed my LNC 2000 timing retard. It's set to pull 4 degrees when my nitrous is armed. I can tell it's working correctly due to the light only coming on the box when the nitrous is armed. When it's off, I get some pretty violent backfiring after a long pull of between high rpm shifts. Is this bad? It's loud as hell and only after the timing box was plugged in. Car runs fine, just have some flames now. Also the car has the launch control feature hooked up, wired to the clutch. So I'm not sure if it's bad or just normal. Duals dumped, no cats.
Thread Starter
10 Second Club
Joined: Feb 2012
Posts: 1,261
Likes: 6
If I understand your description correctly you have the launch control activated by the clutch switch. That means on a shift the launch controller will be active trying to achieve the target RPM setting. It will do this by performing a spark cut during the shift. Since the injectors are still firing that fuel is the likely cause of the backfire event on the shift. The longer the shift the more likely this is to happen.
If you don't want this to occur on the shifts you will need to disable the launch control once you are moving. You can do this with a manual toggle switch or you can use our MPH activated switch.
If you don't want this to occur on the shifts you will need to disable the launch control once you are moving. You can do this with a manual toggle switch or you can use our MPH activated switch.
Also I love this product, figured I'd add that.
