How many of you have done launch control?

Brosef · 05-20-2011, 01:34 PM

Quote:

Originally Posted by Mjolnir

I'll add that the car has to be adequately warmed up before you get the flag.

And I can't believe that anyone on this forum with DCT wouldn't at least try it at least once. I've done it a dozen times and never had the car go out of control on me.

I can admit that I've never tried it. I guess my reasons are just that it seems like it would cause premature clutch wear, and I'm probably keeping this car past warranty. I also think that it will only be more brutal on the trans now that I have a SC.

I have done the full pedal-to-the-floor mashing in S6 from a stop that provides a basic tire-smoking clutch dump a couple times, but my understanding is that LC is more abusive than that on the clutches because it rides them to control wheelspin

but I could be wrong there, in which case, someone please correct me.

mkoesel · 05-20-2011, 01:56 PM

Quote:

Originally Posted by Brosef

I have done the full pedal-to-the-floor mashing in S6 from a stop that provides a basic tire-smoking clutch dump a couple times, but my understanding is that LC is more abusive than that on the clutches because it rides them to control wheelspin but I could be wrong there, in which case, someone please correct me.

I honestly don't know the answer, but I would be very surprised if it worked that way. I'm sure LC is a little harder on the equipment overall than just flooring it from a stop (hence the electronically enforced cool down period between uses), but I strongly doubt the clutch involvement is appreciably different from any other hard shifting scenario with the DCT. I'm pretty sure LC handles the stability of the car using the DSC system only, not the transmission. And as noted above, it actually doesn't do a very good job at that anyway.

Nelrock · 05-20-2011, 02:13 PM

Quote:

Originally Posted by Mjolnir

The LC feature automatically shifts for you so long as the pedal is to the metal. What do you mean when you say "You're in 'S' mode, so you have to shift."?

Sequential mode...vs "D" Drive mode.

I was actually expecting this, but on my attempt, I had the pedal to the floor and it hit the rev limit and just stopped and sat at max rev. I looked down expecting it to shift as part of the launch control programming...but mine didnt. So, I manually engaged the next gear.
Yours completes the shift automatically?

ThunderMoose · 05-20-2011, 02:25 PM

Quote:

Originally Posted by Nelrock

Sequential mode...vs "D" Drive mode.

I was actually expecting this, but on my attempt, I had the pedal to the floor and it hit the rev limit and just stopped and sat at max rev. I looked down expecting it to shift as part of the launch control programming...but mine didnt. So, I manually engaged the next gear.
Yours completes the shift automatically?

If you do it right (flag comes up - pedal all the way down - release shifter), then LC will shift through all of the gears even though you're in S. You have to keep pedal down the whole time or it will kick itself out of LC and then you're in control of shifting again.

ppass · 05-20-2011, 02:26 PM

Thanks for the info the owners manuel does not say to push shifter forward it says to push the cruise lever forward... Must be a typo maybe on purpose! Can't wait to get home and go try it thanks

Nelrock · 05-20-2011, 02:28 PM

Quote:

Originally Posted by ThunderMoose

If you do it right (flag comes up - pedal all the way down - release shifter), then LC will shift through all of the gears even though you're in S. You have to keep pedal down the whole time or it will kick itself out of LC and then you're in control of shifting again.

Hmmmm...
I can't imagine I let up on the pedal, but I guess I'll have to try it again now to make sure if that isn't what happened

James T. Kirk · 05-20-2011, 03:23 PM

Quote:

Originally Posted by sameh

Turn DSC off.
Put it on S it'll go to S3
Move it from S3 to S6
Push the shift lever forward and keep it pushed.
FLOOR the gas while keeping the shifter forward (car won't move but RPM will)
If you need to lower the RPM use the cruise control arm.
Whenever you let the shift lever go, it launches. (keep it floored) if you take your foot off then you ARE responsible for shifting, if you keep it floored it shifts up automatically.

Thank you for putting together the most concise list of steps.
There are innumerable threads on this subject with everyone debating bits and pieces.

ES_TRADER · 05-20-2011, 04:23 PM

Quote:

Originally Posted by James T. Kirk

Quote:

Originally Posted by sameh

Turn DSC off.
Put it on S it'll go to S3
Move it from S3 to S6
Push the shift lever forward and keep it pushed.
FLOOR the gas while keeping the shifter forward (car won't move but RPM will)
If you need to lower the RPM use the cruise control arm.
Whenever you let the shift lever go, it launches. (keep it floored) if you take your foot off then you ARE responsible for shifting, if you keep it floored it shifts up automatically.

Thank you for putting together the most concise list of steps.
There are innumerable threads on this subject with everyone debating bits and pieces.

He didn't mention anything about the flag. Don't h have to get the flag to turn in first??

sameh · 05-20-2011, 04:31 PM

Quote:

Originally Posted by richpuer

Quote:

Originally Posted by James T. Kirk

Quote:

Originally Posted by sameh

Turn DSC off.
Put it on S it'll go to S3
Move it from S3 to S6
Push the shift lever forward and keep it pushed.
FLOOR the gas while keeping the shifter forward (car won't move but RPM will)
If you need to lower the RPM use the cruise control arm.
Whenever you let the shift lever go, it launches. (keep it floored) if you take your foot off then you ARE responsible for shifting, if you keep it floored it shifts up automatically.

Thank you for putting together the most concise list of steps.
There are innumerable threads on this subject with everyone debating bits and pieces.

He didn't mention anything about the flag. Don't h have to get the flag to turn in first??

The flag will appear once you push the shift lever forward (step 3).

Erhan · 05-20-2011, 05:28 PM

Haven't done it yet and have no interest in it.

Frozen Black · 05-20-2011, 06:55 PM

Everyone who has DCT should try it at least once.

GreasyGinzo · 05-20-2011, 06:58 PM

LOL @ some of the responses in here seems like it was a waste for them to get an M3

Mjolnir · 05-20-2011, 07:17 PM

Quote:

Originally Posted by Frozen Black

Everyone who has DCT should try it at least once.

It should be mandatory.

sensi09 · 05-20-2011, 07:23 PM

Haven't done it either. With a 6mt, I don't do drop clutch starts either. Either way, you can still get off the line quickly without launch control.

GreasyGinzo · 05-20-2011, 07:28 PM

Quote:

Originally Posted by sensi09

Haven't done it either. With a 6mt, I don't do drop clutch starts either. Either way, you can still get off the line quickly without launch control.

Wait, I am confused...with a DCT car you are saying that it is faster out of the hole without using LC? Did I get that right? Would love to hear you explain how that works?

sensi09 · 05-20-2011, 07:34 PM

No not faster, but you can get off the line quickly without it. At least fast enough for me for most occasions.

GreasyGinzo · 05-20-2011, 07:42 PM

Quote:

Originally Posted by sensi09

No not faster, but you can get off the line quickly without it. At least fast enough for me for most occasions.

Understood but you are missing a whole world of fun

DragonNeo · 05-20-2011, 10:39 PM

I think you guys convinced me now. I will have to try this sometime.

In the manual it says: Do not use Launch Control too often, as the higher loads on the vehicle lead to premature component wear.

What's too often? Can't BMW give us a number?

mike33176 · 05-20-2011, 10:48 PM

The stock setting0f 5400RPMS is way to high and the tires spin too much. I have a tune which lowers my LC settings to 3500 RPMS and it works great!!!

kautiongsr · 05-21-2011, 04:52 PM

i think everyone should do it atleast once.. here is me on track with launch control lol..

with no launch.. 13.2

RevFreak14 · 05-21-2011, 05:28 PM

Quote:

Originally Posted by erhanh

Haven't done it yet and have no interest in it.

klammer · 05-21-2011, 06:36 PM

I haven't done it and don't plan on it either. Will track the shit out of this car but have no interest in LC. I feel like I bot a 750, not a hayabusa... That being said wouldn't mind doing it in someone elses ride, any takers

05-20-2011, 02:26 PM	#27
ppass Registered 0 Rep 2 Posts Drives: Black 08 M3 coupe DCT Join Date: May 2011 Location: So. Oregon iTrader: (0)	Thanks for the info the owners manuel does not say to push shifter forward it says to push the cruise lever forward... Must be a typo maybe on purpose! Can't wait to get home and go try it thanks
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05-20-2011, 05:28 PM	#32
Erhan Colonel 87 Rep 2,464 Posts Drives: Cooper S Join Date: Oct 2008 Location: Seattle iTrader: (0)	Haven't done it yet and have no interest in it. __________________ 2011 MINI Cooper S previous cars: E92 M3, Z4MC, Z4 Roadster, E36 328 Sedan
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05-20-2011, 06:55 PM	#33
Frozen Black Private 15 Rep 83 Posts Drives: M3 E92 2010 Frozen Black Join Date: Jan 2011 Location: Australia iTrader: (0)	Everyone who has DCT should try it at least once. __________________ Drive it like its stolen
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05-20-2011, 06:58 PM	#34
GreasyGinzo Captain 41 Rep 635 Posts Drives: '08 E92 AW 6MT M3(Totaled) Join Date: Dec 2010 Location: North Jersey iTrader: (1)	LOL @ some of the responses in here seems like it was a waste for them to get an M3 __________________
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05-20-2011, 07:23 PM	#36
sensi09 Lieutenant Colonel 30 Rep 1,789 Posts Drives: . Join Date: Dec 2010 Location: socal iTrader: (1)	Haven't done it either. With a 6mt, I don't do drop clutch starts either. Either way, you can still get off the line quickly without launch control.
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05-20-2011, 07:34 PM	#38
sensi09 Lieutenant Colonel 30 Rep 1,789 Posts Drives: . Join Date: Dec 2010 Location: socal iTrader: (1)	No not faster, but you can get off the line quickly without it. At least fast enough for me for most occasions.
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05-20-2011, 10:39 PM	#40
DragonNeo Private First Class 21 Rep 154 Posts Drives: 2018 X3 M40i Join Date: Jan 2011 Location: MA iTrader: (0)	I think you guys convinced me now. I will have to try this sometime. In the manual it says: Do not use Launch Control too often, as the higher loads on the vehicle lead to premature component wear. What's too often? Can't BMW give us a number? __________________ 2018 X3 M40i Phytonic Blue / Cognac Retired: 2009 E93 M3 Space Gray / Fox Red Extended
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05-20-2011, 10:48 PM	#41
mike33176 Lieutenant 47 Rep 431 Posts Drives: 09 Jerez/ Black, E90 M3 Join Date: Nov 2009 Location: Miami iTrader: (1)	The stock setting0f 5400RPMS is way to high and the tires spin too much. I have a tune which lowers my LC settings to 3500 RPMS and it works great!!!
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05-21-2011, 04:52 PM	#42
kautiongsr bigdaddyjulio 12 Rep 185 Posts Drives: 2011 E92 335IS, 2011 S1000 rr Join Date: Feb 2011 Location: norwalk, ca iTrader: (1)	i think everyone should do it atleast once.. here is me on track with launch control lol.. with no launch.. 13.2 __________________ Big Daddy Julio
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05-21-2011, 06:36 PM	#44
klammer Brigadier General 97 Rep 3,246 Posts Drives: 11 spc gry m3 e90, 19 X5 Join Date: Jan 2010 Location: chicago iTrader: (0)	I haven't done it and don't plan on it either. Will track the shit out of this car but have no interest in LC. I feel like I bot a 750, not a hayabusa... That being said wouldn't mind doing it in someone elses ride, any takers __________________ mods: track ready stuff
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