Creating a Smoother Launch Control
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Creating a Smoother Launch Control
Hey! I'm a novice when it comes to programming and especially when it comes to reprogramming a PCM to do something it was never intended to do.
I've taken a crack at programming my own Launch Control routine for the LS1 PCM at I actually got it to work!
The basics are that it sets the coil dwell to zero if the engine RPM is greater than a set point.
Details in this thread for anyone interested
https://pcmhacking.net/forums/viewtopic.php?f=42&t=6247
The issue is I think there is a limit to how smooth it can hold the RPM's since it's a single set point and it will oscillate.
If anyone has ideas (or better yet code!) that you think would help keep the RPM consistent that would be great.
I've taken a crack at programming my own Launch Control routine for the LS1 PCM at I actually got it to work!

The basics are that it sets the coil dwell to zero if the engine RPM is greater than a set point.
Details in this thread for anyone interested
https://pcmhacking.net/forums/viewtopic.php?f=42&t=6247
The issue is I think there is a limit to how smooth it can hold the RPM's since it's a single set point and it will oscillate.
If anyone has ideas (or better yet code!) that you think would help keep the RPM consistent that would be great.
Re: Creating a Smoother Launch Control
Yes, saw your work in the other thread and it looks great. My first suggestion would be to do like the rest of the factory OS does and add in a form of hysteresis (upper / lower boundary ). This could help reduce the range of oscillations. Other options would have to play with the actual spark value being commanded ... to try and make a "soft" limiter. This would mean more code than a simple hysteresis.
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