Hydra Launch Control - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-27-2009, 01:04 PM   #1
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Default Hydra Launch Control

Anyone have it set up and working good? I'm going to play around with it later and it would be nice to have an idea of what settings have worked for others. My last attempt ended in failure because it either wouldn't spool the turbo or if it would start to spool, the revs wouldn't hold and it would climb to redline.
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Old 06-19-2009, 04:03 PM   #2
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I know I'm quite late to this thread, but Jeremy found that the Hydra LC wouldn't hold my Stroker/GT3071R either. We got the same symptoms you found. Since I'm not much of a drag racer, I just had him leave it off.

BTW, I read your build thread. Bravo Zulu!

Last edited by SafetyFast; 06-20-2009 at 01:21 AM.
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Old 06-19-2009, 10:57 PM   #3
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Yeah, that's what I keep hearing.

This is what Jeremy sent me today for anyone that comes across this thread later, "To enable launch control, you should just have to go to Select -> settings -> ignition and change your Launch RPM Soft to the RPM you want. Then, do what you need to do in the launch Fuel Cut & Spark Cut Cycles to get it to hold at the desired RPM. For turbo car, it's "better" to cut more spark than fuel, however that is also hard on your cat & O2 sensors. Also, you may have to lower your desired RPM to get it where you want it considering how it will creep up under load."

Pretty much straight out of the manual. I was hoping for some actual numbers that have worked on a car with a similar setup that he has already tuned to start with. Oh well. I'm going to keep playing with it and see if I can make any progress. I am quickly getting tired of finding things in the Hydra that are advertised features that don't seem to work at all, work poorly, or can't be used when using other features....
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Old 06-20-2009, 01:38 AM   #4
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While in an Alternate Reality I am sure that I am as mechanically inclined as Smokey Yunnick, in this Reality I never did bond with the Hydra, my mind just doesn't see what you & Jeremy see when playing with the ECU.

OTOH, I've become quite accustomed to the power and just can't go back to a stock Miata. I'll just have to learn to live with the LS2 and a stock ECU.
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Old 06-20-2009, 02:02 AM   #5
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I've learned the basics of tuning and only possess enough knowledge to be potentially dangerous when left unsupervised.

As for getting accustomed to the power, I'm with you on that one. My car already feels slow and I need more. A LS2 with a turbo or two would probably keep me happy for awhile. I see that you are in Tuscon, any chance that you were on Sonoran Muscle Cars in the past?
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Old 06-20-2009, 02:09 AM   #6
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No, my toy is still up in Palisade being constructed. I'm hoping it'll be ready in time for the FM Summer Camp. AFAIK, there aren't many V8 Miatas in AZ.

Oops! I just tried to hit the Sonoran Muscle Cars website...
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Old 06-20-2009, 02:30 AM   #7
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I'm not even sure if that group is still around. When I lived down there they were a pretty interesting group of guys that did everything from car shows, track racing to street racing. Quite a big variety of cars as well. Anyways, there was a guy with a Miata that was part of the group and I thought it might be you.
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Old 06-20-2009, 09:58 AM   #8
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My settings are

launch rpm - 4000
launch fuel cut- 80
launch spark cut- 60

My car builds about 2-3 psi of boost which is actually enough for a decent launch without too much tirespin on 6ULs. Not necksnappingly fast at all but OK. My RPMs don't rise. There's no popping though.

I have a 3071 w/ 750ccs and a tial gate as well. Stock coils.
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Old 10-10-2012, 04:44 PM   #9
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Wanted to dig this up. Running a 2.5 Anyone else tried the above?
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Old 10-10-2012, 05:35 PM   #10
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Quote:
Originally Posted by Faeflora View Post
My settings are

launch rpm - 4000
launch fuel cut- 80
launch spark cut- 60

My car builds about 2-3 psi of boost which is actually enough for a decent launch without too much tirespin on 6ULs. Not necksnappingly fast at all but OK. My RPMs don't rise. There's no popping though.

I have a 3071 w/ 750ccs and a tial gate as well. Stock coils.
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Originally Posted by Canyonfive View Post
Wanted to dig this up. Running a 2.5 Anyone else tried the above?
Who gives a **** if anyone else tried it. This is not hard to do/undo. Just plug in the settings. If it works then it works. Experiment.

Note that launch control on Hydra 2.5 kinda sucks because timing doesn't retard. It's hard to build boost at 20* of timing.
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Old 10-10-2012, 08:24 PM   #11
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Quote:
Originally Posted by Faeflora View Post
Who gives a **** if anyone else tried it. This is not hard to do/undo. Just plug in the settings. If it works then it works. Experiment.

Note that launch control on Hydra 2.5 kinda sucks because timing doesn't retard. It's hard to build boost at 20* of timing.
gee thanks.....
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Old 10-10-2012, 08:34 PM   #12
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Quote:
Originally Posted by Canyonfive View Post
gee thanks.....
You probably won't blow up your car. Also, note that launch control is weather-sensitive. Blah.
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Old 10-10-2012, 10:40 PM   #13
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Gear trim would reduce timing.. how does that work in conjunction with LC. I can always swap maps for times that require launches
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Old 10-11-2012, 02:11 AM   #14
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Quote:
Originally Posted by Canyonfive View Post
Gear trim would reduce timing.. how does that work in conjunction with LC. I can always swap maps for times that require launches

gear trim will reduce it all through first. Still sucks. yah you could trigger map switch to your clutch switch. i can't do that cus i use that map for meth. good idea. creative.
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Old 10-11-2012, 01:51 PM   #15
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Good stuff. Any idea How it actually knows what gear im in?
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Old 10-11-2012, 07:56 PM   #16
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Read the factory manual. It says in there. And other good stuff.

There is a place where u enter max mph for each gear. Or somethibgike that. Google hydra 2.5 manual
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Old 02-12-2013, 09:54 PM   #17
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Quote:
Originally Posted by Canyonfive View Post
Wanted to dig this up. Running a 2.5 Anyone else tried the above?
I've run it on my 2.5. It built boost just fine.
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