[bubsterino]

has anybody confirmed you can do LC on a stick? honestly, I thought "launch control" was just your left foot on a stick, but it seems like there might actually be something official with a manual?

I didn't know that the engine will hold your rpms @ 3000 even on a stick for instance...

[RPM90]

Originally Posted by bubsterino

has anybody confirmed you can do LC on a stick? honestly, I thought "launch control" was just your left foot on a stick, but it seems like there might actually be something official with a manual?

I didn't know that the engine will hold your rpms @ 3000 even on a stick for instance...

True, with MT you control launch because you control the throttle to get higher rpm for the launch, and you control clutch engagement.

I'm not sure if there is a programmed LC for MT's.
Perhaps the additional part is that with DTC activated, you can push the throttle all the way to the floor without the engine rpm going to red line.
I'm guessing that at this point you simply engage the clutch while still having throttle at WFO and the computer handles the required throttle to control fastest take off with least amount of spin.
IOW, it would handle the throttle control to control wheel spin until traction is fully gained.

But I don't now for sure, cause LC seems more appropriate for AT's and dual clutch AT's in order to give them the ability of what an MT can do.

[bubsterino]

Originally Posted by RPM90

True, with MT you control launch because you control the throttle to get higher rpm for the launch, and you control clutch engagement.

I'm not sure if there is a programmed LC for MT's.
Perhaps the additional part is that with DTC activated, you can push the throttle all the way to the floor without the engine rpm going to red line.
I'm guessing that at this point you simply engage the clutch while still having throttle at WFO and the computer handles the required throttle to control fastest take off with least amount of spin.
IOW, it would handle the throttle control to control wheel spin until traction is fully gained.

But I don't now for sure, cause LC seems more appropriate for AT's and dual clutch AT's in order to give them the ability of what an MT can do.

yah. I forgot there was this other thread where somebody uploaded a video of "launch control" on a manual. Basically, at a stop the revs will hold at 3000 RPM or so (supposedly, another rev will take them up higher). I guess you can totally dump the clutch and it works pretty well. i'm assuming this would work best in anything except sport+ because you have the traction control off in that mode. Check out the video.

launch control http://www.2addicts.com/forums/showthread.php?t=984989

[bubsterino]

interestingly enough, he did it in sports + as you can see from the dash

[FlyingFinn]

Does the launch control actually work in your cars? I'm sure I'm doing everything right and get the checkered flag in the dash but still get lots of wheel spin. Basically the only thing the launch control does is that it limits the revs before launch. After that wheels just spin with no throttle / traction control whatsoever.

If there is not anything wrong with my car this is really lame feature. Nothing like in Porsche or Ferrari.

[BLK235iNJ]

what tires do you have?

Not sure if a 50k BMW will perform like a Porsche or Ferrari

Originally Posted by FlyingFinn

Does the launch control actually work in your cars? I'm sure I'm doing everything right and get the checkered flag in the dash but still get lots of wheel spin. Basically the only thing the launch control does is that it limits the revs before launch. After that wheels just spin with no throttle / traction control whatsoever.

If there is not anything wrong with my car this is really lame feature. Nothing like in Porsche or Ferrari.

[FlyingFinn]

Originally Posted by BLK235iNJ

what tires do you have?

Not sure if a 50k BMW will perform like a Porsche or Ferrari

I have the original Bridgestone Potenzas.

Yes, I agree but if it is called the launch control I think it should contol the wheelspin which it doesn't. After all it is still a BMW...

[BLK235iNJ]

With the Mich PSS (warmed up) the car hooks very good. I run Nitto INVO on the car and same I get very good traction and the car is running a Dinan S1/Exhaust/Springs.

The best remedy for launch in my opinion is a proper set of tires.

Originally Posted by FlyingFinn

I have the original Bridgestone Potenzas.

Yes, I agree but if it is called the launch control I think it should contol the wheelspin which it doesn't. After all it is still a BMW...

[3.0L]

Originally Posted by FlyingFinn

I have the original Bridgestone Potenzas.

Yes, I agree but if it is called the launch control I think it should contol the wheelspin which it doesn't. After all it is still a BMW...

Potenza's? Wow, I guess I got lucky. My M235i came with Michelin Pilot Sports.

My 2004 Mazda RX-8 came equipped with Bridgestone Pontenza's and I hated them. True, the tires gripped like no tomorrow, but the road noise was just intolerable. I couldn't wait for them to wear out.

[FlyingFinn]

Originally Posted by BLK235iNJ

With the Mich PSS (warmed up) the car hooks very good. I run Nitto INVO on the car and same I get very good traction and the car is running a Dinan S1/Exhaust/Springs.

The best remedy for launch in my opinion is a proper set of tires.

You are absolutely right but the whole idea of the launch control device is to optimize the grip with given tires and other traction conditions. O.k. it is said in the manual that a good driver may achive better acceleration without the launch control. To me it just does not make sense that the difference in 0 - 100 kmh (or 62 mph) time is as high as 0,5 - 0,6 seconds.

[BLK235iNJ]

I'm sure the launch control is assisting. My 13 Mustang has no launch control... when I mash the pedal to the floor it will just smoke the tires (it will go out of control and not reach 60 unless I DRIVE it).

Does it grip the same when you don't use the launch control, turn off traction control and you manually rev and launch?

cheers

Originally Posted by FlyingFinn

You are absolutely right but the whole idea of the launch control device is to optimize the grip with given tires and other traction conditions. O.k. it is said in the manual that a good driver may achive better acceleration without the launch control. To me it just does not make sense that the difference in 0 - 100 kmh (or 62 mph) time is as high as 0,5 - 0,6 seconds.

[FlyingFinn]

Originally Posted by BLK235iNJ

Does it grip the same when you don't use the launch control, turn off traction control and you manually rev and launch?

cheers

No, that was the whole point. It is very easy to get better grip and acceleration without the launch control.

I'm pretty sure it may be even possible to get better acceleration with just putting the stick to S and flooring the pedal. I have to do some more testing but if this is the case then what's the idea of launch control if it makes launches worse.

[hyperzulu]

Originally Posted by FlyingFinn

No, that was the whole point. It is very easy to get better grip and acceleration without the launch control.

I'm pretty sure it may be even possible to get better acceleration with just putting the stick to S and flooring the pedal. I have to do some more testing but if this is the case then what's the idea of launch control if it makes launches worse.

Consistency

[BLK235iNJ]

I haven't tried it (I'm pretty sure my car doesn't have it (no tech pack)).

I did try to manually rev and launch yesterday and the car just smoked the tires in sport+

Originally Posted by FlyingFinn

No, that was the whole point. It is very easy to get better grip and acceleration without the launch control.

I'm pretty sure it may be even possible to get better acceleration with just putting the stick to S and flooring the pedal. I have to do some more testing but if this is the case then what's the idea of launch control if it makes launches worse.

[BLK235iNJ]

Just mashing the pedal in sport+

[w3rkn]

Originally Posted by BLK235iNJ

Just mashing the pedal in sport+

Do you have a build thread..?

You mentioned certain times your car feels quick, while other it doesn't.. have you distressed the N55 yet..? FMIC..?

[BLK235iNJ]

Not much done to it.

Just a tune and axleback exhaust.

To be honest I'm not sure how to answer the distress question? What do you mean?

Originally Posted by w3rkn

Do you have a build thread..?

You mentioned certain times your car feels quick, while other it doesn't.. have you distressed the N55 yet..? FMIC..?

[moldcad]

My answer will not be about the F22 (which I haven't), but the F10 (which I have and, because it's too large with too small engine, I'm planning to swap for an M235i or 435i). Anyway, I tried LC several times and here are my observations:

- if you have lots of torque (I6), than depending on the tires and the road you may or may not get wheel spin; I have just an I4 and tonnes of grip (xDrive, staggered Michelin PSSs) so no spin at all

- what LC is about in my opinion is how fast the consecutive gears lock in the SAT (including the 1st, after you let go on the brake); in fact the 2nd locks so fast that it remains me of the violent jerks forward I had with my 330i's SMG mechanical gearbox!

[Eddiestl]

I just purchased a 228i. Does it come with LC? The dealer wasn't sure.

[quiksilver1029]

Originally Posted by Eddiestl

I just purchased a 228i. Does it come with LC? The dealer wasn't sure.

Yep, Launch Control works like a charm on my M-Sport 228i. I don't know if having the M-Sport package is what allows you to do it but follow the instructions the guys above have posted and it should work. Gotta love that checkered flag

[configt]

Is this bad for the transmission in any way? My previous car was a GTR and LC blew me away every time. The earlier models had issues with LC and there were reported transmission failures until Nissan changed the way it worked in later revisions.

[PASE624]

I've been trying the LC on my m235i but I do not see the checkered flag on my cluster. Is the checkered flag ONLY on the extended cluster, or does the non-extended cluster also show some kind of indication of LC?