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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports this is the place to discuss making BMWs fast

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Old 04-18-2010, 07:37 PM   #1
fourwhls
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Possible to automatically turn off DSC?

Is there any way possible to automatically turn off DSC when you start the car?

There is a company making a circuit board that allows Mini owners to do just this. They call it "Track mode DSC". Here's a link: http://www.waymotorworks.com/auto-up...2-06-mini.html

Is it possible to do this on an e46?

I made the mistake of not turning off DSC during my final run at the autocross today. It cost me my last run.

I will probably never make this mistake again, but nonetheless, it pissed me off.
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Old 04-18-2010, 08:12 PM   #2
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That is really cool, pretty cheap too. I wonder if there is also a way to turn it back on if you feel you need it when driving.
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Old 04-18-2010, 09:31 PM   #3
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You can build a circuit using the 555 timer, cap and a resistor. That will work. Basically, when the car starts, close the circuit for 3s. Then open it.

t=1.1*R*C IIRC. Hopefully not too rusty! So from there decide what R and C you need.
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Old 04-18-2010, 10:43 PM   #4
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Quote:
Originally Posted by Mr Paddle.Shift View Post
You can build a circuit using the 555 timer, cap and a resistor. That will work. Basically, when the car starts, close the circuit for 3s. Then open it.

t=1.1*R*C IIRC. Hopefully not too rusty! So from there decide what R and C you need.
That is about how far I got before I had absolutely no understanding of what you said.
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Old 04-19-2010, 02:27 PM   #5
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Could just disconnect a wheel speed sensor, which will also disable ABS. No?
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Old 04-19-2010, 02:38 PM   #6
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pretty cool concept. would be nice for an e46 maybe with a few more features
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Old 04-20-2010, 03:41 PM   #7
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just make a check list and tape it to your dash.

my reads as follows:

-Harness
-Helmet
-Balls
-DSC off
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Old 04-20-2010, 09:06 PM   #8
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Unplug the DSC accelerometer under your seat(under the carpet).
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Old 04-20-2010, 11:44 PM   #9
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is it really that hard to remember to turn it off?
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Old 04-20-2010, 11:46 PM   #10
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Originally Posted by SC_TR0JAN_M3 View Post
is it really that hard to remember to turn it off?
seriously just hold the button down until the 2 yellow lights pop up... I do it 90% of the time when I drive
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Old 04-22-2010, 01:03 PM   #11
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If you search Andy Sapp, he has a thread explaining how he did it in his 325 drift car.

found it.

http://forum.e46fanatics.com/showthr...630&highlight=

it turns off dsc, but also abs. lol
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Old 04-22-2010, 01:09 PM   #12
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Not sure, but I think the conforti shark software can be custom programmed with different options regarding DSC. Might only be for M3 though. Worth looking into though if it really bothers you.
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Old 04-22-2010, 04:46 PM   #13
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Originally Posted by SL Blak Soldier View Post
If you search Andy Sapp, he has a thread explaining how he did it in his 325 drift car.

found it.

http://forum.e46fanatics.com/showthr...630&highlight=

it turns off dsc, but also abs. lol
Like I said . . .pull a wheel speed sensor!
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Old 04-24-2010, 03:48 PM   #14
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My mechanic claims that he can program autologic software to do this. It's quite a bit more than the shark injector, so I went that way instead.

Quote:
I will probably never make this mistake again, but nonetheless, it pissed me off.
I say that every time I do it! lol
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Old 04-24-2010, 04:18 PM   #15
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Where do you unplug the Passenger Side, Rear Speed Sensor?
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Old 04-24-2010, 05:09 PM   #16
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Just don't forget to turn it off - that way you can keep your DCS for when you really need it
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Old 04-25-2010, 06:30 PM   #17
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Where do you unplug the Passenger Side, Rear Speed Sensor?
I have an xi, but I'm assuming there's a little black plastic box in the wheel-well where you could easily disconnect it. Just follow the sensor wire . . .
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Old 04-25-2010, 06:36 PM   #18
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Sorry. Just don't quite get it, but why do you want your DSC off especially when tracking?? Chas
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Old 04-25-2010, 06:47 PM   #19
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Quote:
Originally Posted by ChasCan View Post
Sorry. Just don't quite get it, but why do you want your DSC off especially when tracking?? Chas
the program gets in the way of controlling your car the way you need it on a track. for instance if you know that a little bit more throttle would correct a little under-steer, but the dsc is on... you'll continue to under-steer because the program will not allow over-steer. hope that helps.
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Old 04-25-2010, 06:54 PM   #20
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Originally Posted by Messe46 View Post
the program gets in the way of controlling your car the way you need it on a track. for instance if you know that a little bit more throttle would correct a little under-steer, but the dsc is on... you'll continue to under-steer because the program will not allow over-steer. hope that helps.
Ah! now I get it. Thanks. Chas
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