Unused input found on LNF ECM
Former Vendor
Joined: 06-03-08
Posts: 4,169
Likes: 8
From: Grand Rapids, MI
With a stock turbo in place, I would hook up a dry nitrous kit and have the ECM add fuel pressure when the nitrous is on.
With a large turbo in place, I would have this input switch the ECM to anti-lag timing tables as long as a button is pressed.
With a large turbo in place, I would have this input switch the ECM to anti-lag timing tables as long as a button is pressed.
Senior Member
Joined: 02-10-09
Posts: 1,079
Likes: 0
From: east hartford, connecticut
It turns out there's a pin that is not used in the Cobalt SSTC ECM but there is software support in the ECM for it.
We've used unused pins in the past to implement dynamically switchable tune features - like on a NOS build we used it for an arming switch and used an unused output to kick on the NOS solenoid under proper conditions. At the same time we swapped in an alternate fuel and timing table so the vehicle would perform optimally on the bottle vs. off the bottle.
We don't have any usable outputs (yet) but this input could be used for a variety of things. For example, people who are spraying water/methanol injection systems could apply a signal to this input and we could swap in an alternate timing table.
So, this thread is to hear all those great ideas out there! What would people like to use this for?
We've used unused pins in the past to implement dynamically switchable tune features - like on a NOS build we used it for an arming switch and used an unused output to kick on the NOS solenoid under proper conditions. At the same time we swapped in an alternate fuel and timing table so the vehicle would perform optimally on the bottle vs. off the bottle.
We don't have any usable outputs (yet) but this input could be used for a variety of things. For example, people who are spraying water/methanol injection systems could apply a signal to this input and we could swap in an alternate timing table.
So, this thread is to hear all those great ideas out there! What would people like to use this for?
Senior Member
Joined: 06-13-08
Posts: 1,884
Likes: 0
From: Waltham MA
Drugs are bad mkay!
But anyways....this soundsd pretty damn cool. I like the idea of the adjustable launch control, but Im sure theres a lot of other great ideas out there as well.
Former Vendor
Joined: 06-03-08
Posts: 4,169
Likes: 8
From: Grand Rapids, MI
It means that whatever switch activates the meth could also trigger the ECM to switch to different fueling/timing maps.
trifecta tune already does that, why do u need a ecu output?
Senior Member
Joined: 02-01-09
Posts: 1,304
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From: Rio Rancho NM
Turbo's won't make boost unless the engine is under a good load. Which is why when you rev your engine up in neutral the gauge only peaks at about 0 instead of 10lbs of vacuum. The closer to 0 you ca get it, the better, Which is part of what the LC is supposed to do.
Now, if you can manage to hold the gas, the brake and slip the clutch at the same time all while staging up, you may get it to build boost that way. Need a crazy good driver mod for that one.
Vince, how much would it run us for the launch control settings? That way, some of us 'poorer' folk can start saving up our pennies.
I really can't wait till you make this feature possible. Also, how do you ever expect to get your tuner back form if you keep comming up with updates and I keep tearing tendons in my wrist???
Now, if you can manage to hold the gas, the brake and slip the clutch at the same time all while staging up, you may get it to build boost that way. Need a crazy good driver mod for that one.
Vince, how much would it run us for the launch control settings? That way, some of us 'poorer' folk can start saving up our pennies.
I really can't wait till you make this feature possible. Also, how do you ever expect to get your tuner back form if you keep comming up with updates and I keep tearing tendons in my wrist???
Last edited by raynrishad; Nov 20, 2009 at 03:18 PM.
Exhaust Cutout when you press the mute button ..... oh the irony lol. Or if you hit the mute before you shut the car off it acts like a turbo timer ? I always wait 30 seconds or so before i shut my car off.
Senior Member
Joined: 01-12-09
Posts: 4,220
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From: Illinois
Damnit vince... I just threw my HPT computer out the window.
Nah, jk. I wish you could come up with a User Interface. there are so many things I would love to do, and I would be all over this. Plan is to be going with a GT28 turbo this winter, and I have so much I want to change (dashpot, true launch control that builds boost, fuel pressure mod... etc...).
Nah, jk. I wish you could come up with a User Interface. there are so many things I would love to do, and I would be all over this. Plan is to be going with a GT28 turbo this winter, and I have so much I want to change (dashpot, true launch control that builds boost, fuel pressure mod... etc...).
Thread Starter
Member
Joined: 04-09-08
Posts: 377
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From: Seattle, WA
If we find an unused output, we could implement an exhaust bypass feature like the Corvettes have! ;-)
Thread Starter
Member
Joined: 04-09-08
Posts: 377
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From: Seattle, WA
1. Start the car
2. While stationary, hold the engine RPM at what you want the launch RPM to be
3. Press the cruise control SET button, release the accelerator
4. This is now the programmed launch control setting
Senior Member
Joined: 09-25-08
Posts: 5,384
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From: Depew, NY
Turbo's won't make boost unless the engine is under a good load. Which is why when you rev your engine up in neutral the gauge only peaks at about 0 instead of 10lbs of vacuum. The closer to 0 you ca get it, the better, Which is part of what the LC is supposed to do. ?
Senior Member
Joined: 05-14-08
Posts: 1,023
Likes: 1
From: around the world
Damnit vince... I just threw my HPT computer out the window.
Nah, jk. I wish you could come up with a User Interface. there are so many things I would love to do, and I would be all over this. Plan is to be going with a GT28 turbo this winter, and I have so much I want to change (dashpot, true launch control that builds boost, fuel pressure mod... etc...).
Nah, jk. I wish you could come up with a User Interface. there are so many things I would love to do, and I would be all over this. Plan is to be going with a GT28 turbo this winter, and I have so much I want to change (dashpot, true launch control that builds boost, fuel pressure mod... etc...).
New Member
Joined: 09-22-09
Posts: 123
Likes: 0
From: PR
Quote:
Originally Posted by nikemax21
Adjustable launch control would be sickkk but how will we know what it is set at?
Sub'd BTW
Originally Posted by nikemax21
Adjustable launch control would be sickkk but how will we know what it is set at?
Sub'd BTW
1. Start the car
2. While stationary, hold the engine RPM at what you want the launch RPM to be
3. Press the cruise control SET button, release the accelerator
4. This is now the programmed launch control setting
Senior Member
Joined: 03-05-09
Posts: 1,028
Likes: 2
From: Des Moines, IA
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
Turbo's won't make boost unless the engine is under a good load. Which is why when you rev your engine up in neutral the gauge only peaks at about 0 instead of 10lbs of vacuum. The closer to 0 you ca get it, the better, Which is part of what the LC is supposed to do.
Now, if you can manage to hold the gas, the brake and slip the clutch at the same time all while staging up, you may get it to build boost that way. Need a crazy good driver mod for that one.
Vince, how much would it run us for the launch control settings? That way, some of us 'poorer' folk can start saving up our pennies.
I really can't wait till you make this feature possible. Also, how do you ever expect to get your tuner back form if you keep comming up with updates and I keep tearing tendons in my wrist???
Now, if you can manage to hold the gas, the brake and slip the clutch at the same time all while staging up, you may get it to build boost that way. Need a crazy good driver mod for that one.
Vince, how much would it run us for the launch control settings? That way, some of us 'poorer' folk can start saving up our pennies.
I really can't wait till you make this feature possible. Also, how do you ever expect to get your tuner back form if you keep comming up with updates and I keep tearing tendons in my wrist???