Just finished fitting launch control and flat shift!! VIDEO
03-08-2011, 10:31 PM
#1
Just finished fitting launch control and flat shift!! VIDEO
It's fucking awesome!!!!!! 
When launching because you can retard the timing as part of the limiting it makes about 12psi of boost at 3500rpm so you launch making boost and it sounds just like antilag (which works in a similar way) popping and spitting and the same when you flat shift!!
A quick video as I'm parked on my drive and the neighbors wont be too happy!
When launching because you can retard the timing as part of the limiting it makes about 12psi of boost at 3500rpm so you launch making boost and it sounds just like antilag (which works in a similar way) popping and spitting and the same when you flat shift!!
A quick video as I'm parked on my drive and the neighbors wont be too happy!
Last edited by Karlos G; 20-02-2015 at 10:00 PM.
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04-08-2011, 07:24 AM
#10
10K+ Poster!!
As do most ecus these days really, my motec does it and that's quite a old ecu now.
Jim is probably thinking of the type people tend to use with sequential boxes, load cell on the shifter etc
Jim is probably thinking of the type people tend to use with sequential boxes, load cell on the shifter etc
04-08-2011, 07:41 AM
#11
15K+ Super Poster!!
We rim it on Gary's,
I also mapped my Aud for it - 4wd and 2 bar of boost - that's a proper launch lol.
http://www.youtube.com/watch?v=ihBmmrbJccU
Rick
I also mapped my Aud for it - 4wd and 2 bar of boost - that's a proper launch lol.
http://www.youtube.com/watch?v=ihBmmrbJccU
Rick
That is a PROPER launch!!
04-08-2011, 03:38 PM
#14
I think if you had the switch at the bottom of the pedal travel you would get slip but I fitted mine to the top for this very reason
Makes for very fast gear changes and it actually feels smoother than changing normally, really pleased!
Last edited by Karlos G; 04-08-2011 at 03:41 PM.
04-08-2011, 04:44 PM
#16
Nope, not as far as I can tell! Soon as you touch the clutch pedal it pops as the timing is retarded just before it hard limits.
I think if you had the switch at the bottom of the pedal travel you would get slip but I fitted mine to the top for this very reason
Makes for very fast gear changes and it actually feels smoother than changing normally, really pleased!
I think if you had the switch at the bottom of the pedal travel you would get slip but I fitted mine to the top for this very reason
Makes for very fast gear changes and it actually feels smoother than changing normally, really pleased!
04-08-2011, 04:53 PM
#17
Ah yeah, I used a bonnet switch on a bracket I made using a universal Central locking motor rail (stuff I just had laying around) and then used one of the steering column bolts to secure it in place above the pedal.
I think it activates after around 5mm of travel, which does nothing as far as clutch disengagement goes.
I think it activates after around 5mm of travel, which does nothing as far as clutch disengagement goes.
04-08-2011, 05:04 PM
#19
We rim it on Gary's,
I also mapped my Aud for it - 4wd and 2 bar of boost - that's a proper launch lol.
http://www.youtube.com/watch?v=ihBmmrbJccU
Rick
I also mapped my Aud for it - 4wd and 2 bar of boost - that's a proper launch lol.
http://www.youtube.com/watch?v=ihBmmrbJccU
Rick
This audi makes me smile!
http://www.youtube.com/watch?v=D53yHBT8-LM
What a launch
Rob,
Last edited by Rob_DOHC; 04-08-2011 at 05:06 PM.
05-08-2011, 09:25 AM
#27
Karl one idea,
If your switch is at the top (which it is) touching the clutch pedal when you have wheel spin might work well as a (really) crude traction control.
I really want someone to write some proper code for basic traction (which i think they may have done) and decent boost control. At the moment the boost control leaves a lot to be desired and i don't see why it couldn't be as good as a stand alone boost controller with some cleaver code.
Rob,
If your switch is at the top (which it is) touching the clutch pedal when you have wheel spin might work well as a (really) crude traction control.
I really want someone to write some proper code for basic traction (which i think they may have done) and decent boost control. At the moment the boost control leaves a lot to be desired and i don't see why it couldn't be as good as a stand alone boost controller with some cleaver code.
Rob,
05-08-2011, 11:22 AM
#30
Karl one idea,
If your switch is at the top (which it is) touching the clutch pedal when you have wheel spin might work well as a (really) crude traction control.
I really want someone to write some proper code for basic traction (which i think they may have done) and decent boost control. At the moment the boost control leaves a lot to be desired and i don't see why it couldn't be as good as a stand alone boost controller with some cleaver code.
Rob,
If your switch is at the top (which it is) touching the clutch pedal when you have wheel spin might work well as a (really) crude traction control.
I really want someone to write some proper code for basic traction (which i think they may have done) and decent boost control. At the moment the boost control leaves a lot to be desired and i don't see why it couldn't be as good as a stand alone boost controller with some cleaver code.
Rob,
MS1 had RPM based traction control, would be better using a pair of wheel speed sensors though and IMO not that hard to program either.
Dont know what you mean Muz?! Cabby's handle really well... 
lolCheers mate!
05-08-2011, 12:10 PM
#31
Your right Rob it would work to some extent, a very light touch of the pedal (restin your foot for example) does activate.
MS1 had RPM based traction control, would be better using a pair of wheel speed sensors though and IMO not that hard to program either.
MS1 had RPM based traction control, would be better using a pair of wheel speed sensors though and IMO not that hard to program either.
So if the rpm increases faster (the gradient is steeper) than a predetermined curve you have wheel spin, and could retard timing, cut boost, spark cut etc etc
I was talking to Chip about this a while ago and he had some dealings with a traction/launch control which was similar to the above...... if only i could write code lol.
Rob,
05-08-2011, 12:27 PM
#33
Sweeet, i think you could do it quite well with a rate of change graph of rpm,
So if the rpm increases faster (the gradient is steeper) than a predetermined curve you have wheel spin, and could retard timing, cut boost, spark cut etc etc
I was talking to Chip about this a while ago and he had some dealings with a traction/launch control which was similar to the above...... if only i could write code lol.
Rob,
So if the rpm increases faster (the gradient is steeper) than a predetermined curve you have wheel spin, and could retard timing, cut boost, spark cut etc etc
I was talking to Chip about this a while ago and he had some dealings with a traction/launch control which was similar to the above...... if only i could write code lol.
Rob,
Thanks mate!
05-08-2011, 03:04 PM
#34
15K+ Super Poster!!
Rick is your Howdy on megasquirt too? Sounds superb!
This audi makes me smile!
http://www.youtube.com/watch?v=D53yHBT8-LM
What a launch
Rob,
This audi makes me smile!
http://www.youtube.com/watch?v=D53yHBT8-LM
What a launch
Rob,
Rick
06-08-2011, 09:38 AM
#40
Yeah as Rob said, you keep your foot planted and the ECU holds the revs at something sensible like 4800rpm (or whatever you set it to) until your into the next gear and bring the clutch up... Keeps boost pressure and makes for faster gear changes.