Anti Rev System (Traction Control) ???? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 07-11-2008, 11:43 AM   #1
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Default Anti Rev System (Traction Control) ????

Okay, you guys win, I am coming to the dark side (MS-II pcb V3.0 ordered)
The "key" feature that drove me to MS-II was the flex fuel support. E-85 makes excellent race fuel, but is not always available.

While I am waiting, I am playing with megatune. I was looking at some of the MS-1 features because a had a MSPnP map to look at, and ran across the Anti Rev settings.

It appears from the screens that based on the rate of increase of RPM it will pull timing etc to limit power and reduce the wheel spin. I can't seem to find any documentation on it. That could be just because I don't know where to look though.

So to the questions:
1) Where would I find the documentation if it exits?
2) Has anyone used it and what were your results?
3) Are there any plans for this to be ported to MS-II? If not, who would I make a plea to to get that changed?

Thanks in advance,
--Chris

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Old 07-11-2008, 11:52 AM   #2
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anit much else to it really, and anit much documention...might search google for anyone whos tried it. i wanted to play with it, never get around to it.
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Old 07-11-2008, 11:55 AM   #3
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It was always kind of experimental and not widely used. I can email you a copy of an archived page on it but if you want to see if it could go in a future version of MS2/Extra, your best bet is to ask about it in the MS2/Extra code development forum on msextra.com.
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Old 07-11-2008, 01:12 PM   #4
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Matt,
Please email me the page. I am heading to msextra.com now.

Getting excited here, can't wait to have adequate spark with the COPs, and my idle went south on the EMU, it was controlling the idle ok on the 750cc injectors but now wants to idle at 10.5 to 1.
Edit: as i typed this, i now think i need to check my fuel pressure
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Old 07-14-2008, 04:47 PM   #5
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Hey, Chris. I just got back from Chicago, and your MS is sitting on my desk, along with some other bits and a couple of vinyl decals that say DIYAUTOTUNE.COM. ****, if I'd have known all I needed to do to get a discount was to stick some decals on my car, I'd have done it too.

I'll start into it tonight.

Matt, this will be my first MS2 escapade, so look forward to some newbie questions.
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Old 07-14-2008, 04:59 PM   #6
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Quote:
Originally Posted by Joe Perez View Post
Hey, Chris. I just got back from Chicago, and your MS is sitting on my desk, along with some other bits and a couple of vinyl decals that say DIYAUTOTUNE.COM. ****, if I'd have known all I needed to do to get a discount was to stick some decals on my car, I'd have done it too.

I'll start into it tonight.

Matt, this will be my first MS2 escapade, so look forward to some newbie questions.
Take good care of those stickers. EVERYBODY knows stickers add at least 10 HP each. And DIYAUTOTUNE stickers ought to allow me to tune them add at least 15 each.

Thanks for building it for me Joe. I know I would have let the magic white smoke out.
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Old 07-15-2008, 09:08 AM   #7
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The way he promised to display the sticker at the Solo II Nationals went a long way...
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Old 07-15-2008, 01:55 PM   #8
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Hell, I'll display my DIYAutoTune sticker at the NASCAR Food City 500 at Bristol next year. It'll be from the parking lot, of course.
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Old 07-15-2008, 04:02 PM   #9
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Oooo - going to go the 36-1 wheel route? 99 motor, right, no variable cams?

Should be good, should be good.

The MS-II folks are darned slow. Be sure to sound clueless or you won't get listened to. :-) Actually, I don't know if any V2.5 betas are coming out yet, but I thought the traction control was already decent on the MS-II. As to the idle.... Well, that's another story. Anyway, I want to keep an eyeball on this project, so I'm just checking in.
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Old 07-15-2008, 05:14 PM   #10
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Quote:
Originally Posted by AbeFM View Post
Oooo - going to go the 36-1 wheel route? 99 motor, right, no variable cams?

Should be good, should be good.

The MS-II folks are darned slow. Be sure to sound clueless or you won't get listened to. :-) Actually, I don't know if any V2.5 betas are coming out yet, but I thought the traction control was already decent on the MS-II. As to the idle.... Well, that's another story. Anyway, I want to keep an eyeball on this project, so I'm just checking in.
It is a '99 motor, but I haven't thought far enough ahead to decide on the trigger wheel. Right now, all the electronics in the '92 chassis still think it's a 1.6.

Priorities are:
1) Driving the COPs (15 PSI at 6000 ft above sea level displays the weakness of the stock coils)
2) KnockSense MS to pull timing if bad things start to happen
3) A little better partial throttle control for those times you just can't be WOT and getting rid of the stock ecu so I have no lean tip in etc to contend with
4) Flex fuel support to handle variable percentages of ethanol in the tank
5) Traction control if it makes a come back

That should see me through until Christmas anyway. Maybe Santa will bring me a 36-1 wheel, but I haven't done enough research on it yet to tell me what it buys me other than no CAS on the back of the head (which I don't mind).
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Old 07-15-2008, 05:35 PM   #11
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If you're running an MS-II, you're likely not going to run the CAS anyway - and the CAS if cam-belt-driven, so your timing will wander. Wandering timing means you have to be more conservative, if timing wanders by 3 degrees, you have to set your timing back some significant fraction of that, and that hurts power, throttle response, etc.

I would say to run the stock '99 sensors if you don't want to get a wheel, but a wheel should be cheap (a friend of mine had some water-jet cut for like $25/pair), and will give you the best resolution.

Very good timing control is one of the biggest advantages of the MS-II, and it costs the same so you might as well consider it. Unless you're running four independent injector or spark channels, you might as well run a crank wheel, it'll even start faster. I may go to a system like that myself, if I do I'll probably still recycle the OEM '99 sensor since I'm just a fan of digital data. :-)
-Abe.
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Old 07-15-2008, 06:31 PM   #12
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Abe, shut up. You're creating more work for me.

We're going to start with CAS since it's known to be presently functional on the engine. We may later decide to switch the CKP pulse to the crank sensor.
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Old 07-15-2008, 07:03 PM   #13
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Knocksense MS just arrived. Wooo hoooo!
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Old 07-15-2008, 07:28 PM   #14
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Heck, what's the point then? Why not just put a bucket of gasoline in front of the throttle plates, I'm sure "about" the right amount will go in. It's not more work at all! It's less. One itsy bitsy little opamp and you're good to go.
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