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-   MEGAsquirt (https://www.miataturbo.net/megasquirt-18/)
-   -   Launch Control FTMFW (https://www.miataturbo.net/megasquirt-18/launch-control-ftmfw-22443/)

kotomile 06-16-2008 04:32 PM

So then the verdict is leave the FM clip in place, but unplug the neutral safety switch?

I no haz no steenkin' CC anyway so that's not a factor.

wes65 06-16-2008 04:40 PM

so, is this, or is it not the same thing as 2-step?

Splitime 06-16-2008 04:47 PM


Originally Posted by wes65 (Post 272150)
so, is this, or is it not the same thing as 2-step?

It is the 2step basically. Realize that he has it setup as just Fuel cut, which is quite soft. I believe his engage/cut distances are on the larger side also, which would make it softer also.

You could make your launch stuff look like this....

Mach929 06-16-2008 06:01 PM

that's pretty sweet, i'll add it to the list of things i never get to

ApexOnYou 06-16-2008 08:42 PM

Is it set to fuel cut only? The rev limiter seems a bit slow. Mine is set to spark only and acts similar to the video Splitime posted. Set the limiter at 5 base 3 cut, seems to work fine so I left it.

Braineack 06-16-2008 09:14 PM

I dont like spark cut, it's spark/fuel so it behaves differently. but hell, it still spools the turbo.

ApexOnYou 06-17-2008 12:10 AM

Have you tried launching with it yet? Even at 10psi I had no traction on the street with it set at 2200. I am going to rig up something so that I run waste gate pressure for launch control (~6psi), then back to whatever the MBC is set at once the clutch is out, just have to find the parts now.

You have a EBC running with MS right?

y8s 06-17-2008 03:21 PM

what kinda EGT you see scott?

jayc72 06-17-2008 03:36 PM

Does the MS do anything with ignition during launch control?

Braineack 06-17-2008 03:36 PM


Originally Posted by y8s (Post 272527)
what kinda EGT you see scott?


im sure it gets up there....probably not as much as with spark cut, but there is a good video on youtube where you can see him hit 1400*F fast.

Matt Cramer 06-18-2008 08:15 AM


Originally Posted by jayc72 (Post 272534)
Does the MS do anything with ignition during launch control?

It can cut off the ignition if you want it to.

jayc72 06-18-2008 11:39 AM

I don't suppose DIY autotune will take an FM link as a trade in huh? :) I'd like launch control.

kotomile 06-18-2008 04:26 PM

I'm a little confused :noob:

The manual says this:

"Launch Control

(clutch switch jumper wire required at center connector, or you can wire a separate switch/button)

You can use either the stock clutch switch or an external switch for launch control. To use the stock clutch switch, connect pins 12 and 13 together on the center connector. If you want to use your own switch for launch control, connect pin 12 to one terminal of a momentary contact switch and the other terminal on the switch to a chassis ground. Launch control is turned off by default in the tuning software—you can access it’s config in Megatune from the ‘Advanced’ Menu under ‘Launch Control’."

it doesn't say anything about the neutral safety switch, why am I supposed to unplug it?

StankCheeze 06-18-2008 04:46 PM

Posting to express love for Brain's old busted ass Eclipse tape player

Braineack 06-18-2008 05:17 PM


Originally Posted by StankCheeze (Post 273105)
Posting to express love for Brain's old busted ass Eclipse tape player

cd player, and it works fully. i just use an allen wrench for the volume up button.

Braineack 06-18-2008 05:19 PM


Originally Posted by kotomile (Post 273092)
it doesn't say anything about the neutral safety switch, why am I supposed to unplug it?

once you have it hooked up, see how it reacts with the car to ON. the launch control light with light up red when active. if its on in gear, regardless of the clutch, you need to unplug it. it's the two white little connectors off the top of the tranny.

kotomile 06-18-2008 05:27 PM

Thanks, I think I answered my own question by going to page 1 and looking at the diagram you posted. So I would basically need to unplug the NSS so that it's not completing the circuit, which would in effect tell the MS that I had dumped the clutch. amirite?

Braineack 06-18-2008 05:30 PM

bascially, if you look at the switches

the clutch switch is only grounded when depressed, perfect signal for launch control. clutch down, activate launch control above X tps.

the safety switch grounds when in gear. not cool, MS will think the clutch is down and you wont be able to drive forward when you push the throttle past your trigger.


speaking of, not certain launch control works with a tps signal.....not sure if the PNP addresses this.

StankCheeze 06-18-2008 06:24 PM


Originally Posted by Braineack (Post 273122)
cd player, and it works fully. i just use an allen wrench for the volume up button.

My bad. I mixed you up with whoever has that shit ass tape player on here. I only saw the corner of it and assumed it was that one ;)

kotomile 06-18-2008 06:27 PM

trying it now..


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