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      05-13-2010, 12:29 PM   #1
AltecBX
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BMW Yaw Control

Does BMW use Yaw control? From my research it does it by applying it by ABS.

After driving around for sometime in a tuned BMW, sometimes when something goes wrong the cars computer will kick in but the tune will still behave the same. Will a tuner incorporate or read yaw control to then apply boost whenever needed?
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      05-13-2010, 12:47 PM   #2
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Huh? DSC will attempt to control yaw in case of a slide by modulating the brakes at all four corners. Find a big open parking lot in the rain and try to slide it, you'll see.

As far as being related to tunes, I'm not even sure what you're asking?
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      05-13-2010, 12:50 PM   #3
AltecBX
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Will a tune lower boost or turn off completely when DSC is involved controlling YAW?
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      05-13-2010, 12:54 PM   #4
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Quote:
Originally Posted by AltecBX View Post
Will a tune lower boost or turn off completely when DSC is involved controlling YAW?
I am fairly certain this is a throttle plate activity, but the short answer is probably "it depends on the tune"
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      05-13-2010, 01:53 PM   #5
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I was under the impression that active yaw control had more to do with normal cornering and body roll, and how the outside struts would adjust to compensate for the cornering inertia? not neccessarily when the user input is demanding sharper turning angle than the car can deliver, triggering dsc
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      05-13-2010, 02:16 PM   #6
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Quote:
Originally Posted by dmurray14 View Post
I am fairly certain this is a throttle plate activity, but the short answer is probably "it depends on the tune"
The Procede, as it seems to be the tune with the most reads of what the car is doing.
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Originally Posted by shochu75 View Post
I was under the impression that active yaw control had more to do with normal cornering and body roll, and how the outside struts would adjust to compensate for the cornering inertia? not neccessarily when the user input is demanding sharper turning angle than the car can deliver, triggering dsc
I want to know as well how it actually works as well? I know the STI's did it electronically through their differentials.
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      05-13-2010, 02:38 PM   #7
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Quote:
Originally Posted by AltecBX View Post
The Procede, as it seems to be the tune with the most reads of what the car is doing.
Maybe Shiv will comment, but I'd assume the Procede isn't too worried about it, since the DME handles it already.

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Originally Posted by AltecBX View Post
I want to know as well how it actually works as well? I know the STI's did it electronically through their differentials.
As I said above, I believe DSC "yaw control" is done with independent braking.
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      05-13-2010, 03:11 PM   #8
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Shiv will you incorporate this in the future of the Procede?
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      05-13-2010, 03:56 PM   #9
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Ya... definitely not going to get involved traction control related stuff.
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      05-13-2010, 05:38 PM   #10
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Quote:
Originally Posted by shiv@vishnu View Post
Ya... definitely not going to get involved traction control related stuff.
waaay too much liability there.... I am assuming you're not ready to risk people's lives on "beta" releases on that stuff
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      05-13-2010, 05:43 PM   #11
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We'll still to exposing ourself to the acceptable problems ("hey, my SES light didn't blink when I switched maps!") than bad ones ("hey, I crashed my car into a tree because the traction control applied too much brake to the rear outside tire!")
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      05-13-2010, 05:56 PM   #12
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Not at all what I meant on the traction side. Basically have the tune read what the traction is doing and adjust boost and features that the Procede supply.
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      05-13-2010, 05:59 PM   #13
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Quote:
Originally Posted by AltecBX View Post
Not at all what I meant on the traction side. Basically have the tune read what the traction is doing and adjust boost and features that the Procede supply.
ahhh ok.. But we are doing that with the wheelspeed input already. With more enhancements to come in the near future.

Shiv
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      05-13-2010, 06:43 PM   #14
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Quote:
Originally Posted by AltecBX View Post
Not at all what I meant on the traction side. Basically have the tune read what the traction is doing and adjust boost and features that the Procede supply.
Do you basically want the car to drive itself? Just take your car to a track (not drag strip) and learn how to drive your car.
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      05-13-2010, 10:31 PM   #15
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Who uses traction control ????? Aside from those f'ing environmentalists in that prius thread.....
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      05-13-2010, 10:34 PM   #16
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Quote:
Originally Posted by shiv@vishnu View Post
ahhh ok.. But we are doing that with the wheelspeed input already. With more enhancements to come in the near future.

Shiv
Great. Would like to hear about it Shen you get a chance.
Thanks

Quote:
Originally Posted by RambleJ View Post
Do you basically want the car to drive itself? Just take your car to a track (not drag strip) and learn how to drive your car.
What! NO. Why would you want that.
I do 100% of my driving in the streets, as probably everybody else. I thought yaw control was the vehicle measuring longitudinal and lateral g forces, steering, brakes and throttle position.

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Who uses traction control ????? Aside from those f'ing environmentalists in that prius thread.....
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      05-13-2010, 10:34 PM   #17
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Quote:
Originally Posted by RambleJ View Post
Do you basically want the car to drive itself? Just take your car to a track (not drag strip) and learn how to drive your car.
+234243


This thread really doesn't make any sense...
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      05-14-2010, 10:36 AM   #18
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Quote:
Originally Posted by AltecBX View Post
Great. Would like to hear about it Shen you get a chance.
Thanks



What! NO. Why would you want that.
I do 100% of my driving in the streets, as probably everybody else. I thought yaw control was the vehicle measuring longitudinal and lateral g forces, steering, brakes and throttle position.


That'e exactly my point, try and take up one of the BMWCCA driving clinic's and learn the limitations and control of your own car, instead of relying on a computer to cut boost during hard driving activities.
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      05-14-2010, 10:51 AM   #19
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Quote:
Originally Posted by inthemiddle View Post
Who uses traction control ????? Aside from those f'ing environmentalists in that prius thread.....
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      05-14-2010, 10:52 AM   #20
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Quote:
Originally Posted by RambleJ View Post
That'e exactly my point, try and take up one of the BMWCCA driving clinic's and learn the limitations and control of your own car, instead of relying on a computer to cut boost during hard driving activities.
I totally understand what your saying but I'm posting this question because the car with stock boost operates this way. Just as a Porsche Turbo can do 14.5psi, I would like to see a tuner seamlessly cut or add more boost as to what the car is doing by reading the cars yaw control.

I've taken track lessons in Europe on different kind of cars(160€+) and difently know how to drive in different situation, cornering, shift points, throttle. BMWCCA here is to expensive.
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      05-14-2010, 11:52 AM   #21
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Quote:
Originally Posted by RambleJ View Post
That'e exactly my point, try and take up one of the BMWCCA driving clinic's and learn the limitations and control of your own car, instead of relying on a computer to cut boost during hard driving activities.
And while we're on this topic, the drag strip IS NOT THE TRACK!!! IT'S THE STRIP!!!

A real track has turns and requires some skill! Hint: it's what the engineers designed these cars for!
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      05-14-2010, 12:25 PM   #22
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Quote:
Originally Posted by dmurray14 View Post
And while we're on this topic, the drag strip IS NOT THE TRACK!!! IT'S THE STRIP!!!

A real track has turns and requires some skill! Hint: it's what the engineers designed these cars for!
+1000
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