Ok, first... I know absolutely nothing about SMG as I only know what I have read and my driving experiences with it are very limited (IE. moving cars or a few hundred feet at most -- no extended driving time).

I was told today... that it is possible to get the RPMs above 1800rpm before moving off. If you are sitting as a traffic light (or timing light, whatever) and you pump the gas (on/off/on/off) you can get the RPMs above 1800rpm.

For example, when you go to move off from a traffic light, if you mash the gas, the RPMs jump up before releasing the clutch. However, if you let go of the gas pedal before the car releases the clutch, but then remash the gas but release before clutch engagement again (repeat until your hearts content), the car will keep raising the RPM before dropping the clutch...

So far, I've heard that somebody has gotten the car to 2500rpm before he decided to let the car do it's thing...

Any truth to this? Has anybody tried it with better launching results? Does anybody know of any consequences (other than increased drivetrain/clutch wear)? Anybody going out to try this right now?

I'll go try with my friend's M3 tomorrow. :devillook

So basically start in N, go to 1st, fail to give it gas, car engages clutch to prevent stall, mash gas and the car might let me get another 1krpm in before it engages the clutch?

Here is what I think... if the car is in gear and you mash the gas, the car will raise the RPM and dump the clutch to give you a great launch.

However, if you mash the gas (kinda like pumping the gas pedal), the car will raise the RPM to dump the clutch but before the car dumps the clutch you release the gas. Keep pumping the pedal and it will keep raising the RPM.

Again, I'm not sure of the result... as I just heard this today.

Kinda sounds like bringing an M3 to the brink of orgasm and then stopping, and doing it again and again until the intensity builds and it finally explodes, all over the street.

Or maybe I'm a sick bastid...

Eh, either way I'll give it a try. :D

Defiantly worth a try. :evil2

too bad i only has 2000miles on her, didn't even try LC on her yet (but did try it on friend's car).

I will give this a shot tommorow.

Yep it is true.. MVR3332 and I were in Orlando this weekend and he discovered this method. He then informed me about it and i passed the info over to Kevlar...
MVR3332 has been able to consistently launch at 2500rpm. However i can only raise it to 2100 rpm..
Although this method is quicker than the "F1 Launch" (quicker to reach the desired rpm) it requires skill to pump the pedal...

This is what you do....
Start on any mode (Sequential or Automatic - works on all modes) and make sure you are on a flat surface..
Then slowly begin to pump the pedal. If done correctly, the rpms will begin to raise. At the desired rpm, mash the pedal and your off....
Having DSC on limits wheel slippage and kinda kills the launch. DSC off will produce a more desirable launch....

Hope you guys enjoy,.. and please send some feedback..

soooooooooo, all we did to do is to keep pumping the gas pedal fast enough that the clutch doesn't release, up till the desire rpm is reached? right?? :rolleyes:

man, can't wait to try it........btw, how many mileages till you guys recommend to try either the LC or the above mentioned launch.....?? :rolleyes:

I've been told that if the car was broken in properly, you can start driving it hard have the first break in period which is 1200 miles. I waited until 3000 before I really started to push it... especially off the line.

WELL...... I REALLY DIDN'T WANT TO SAY ANYTHING (HINT HINT JERRY) BECAUSE I DIDN'T TEST OUT THIS METHOD..:mad: :mad: :mad: O WELL

I know you wanted to keep it on the DL, but we need to get this out to the open and see if it is harmful to the car.. There are alot of BMW xperts on this board that can help us with that.....

BMW warns us about the S54 engine and increasing the engine speed with no load (as in neutral)... I assume there's a reason for this?

Originally posted by MattMan
BMW warns us about the S54 engine and increasing the engine speed with no load (as in neutral)... I assume there's a reason for this?

its a general rule of thumb to not rev any motor to oblivion with no load cause it wreaks havoc on the main bearings...

Can you get it so you can launch it where it belongs to be launched??? (ie- 4500-5500 rpms)???

If I release the clutch at idle and mash the gas, the tires will spin all the way to redline... I don't know why you'd have to launch it so high... :dunno

On stock tires those size, it's not that much of a surprise. You need to use the 3rd pedal in your car to regulate what you let reach the ground (read: wear the shit out of your clutch) to get it to launch at a higher rpm, so that when you grab you grab near torque peak to take advantage of your engine's power curve.

Another way to do that with less clutch abuse is stickier tires for take off at the track, etc...

I sometimes don't even get my clutch pedal fully out all the way thru 1st gear at the track, in my car, even with drag radials mounted up...

I sometimes don't even get my clutch pedal fully out all the way thru 1st gear at the track, in my car, even with drag radials mounted up...

That's awesome:D. What number clutch are you on?:dunno;)

#1, but I only have 7900 miles on my car so far.... :devillook

Matter of time, before I need a new one.... :evil2

Greg termed my clutch, due to my launch technique, as BimmerForums Official "Red-Headed Step-Clutch"... :D

Originally posted by SilverStreak
On stock tires those size, it's not that much of a surprise. You need to use the 3rd pedal in your car to regulate what you let reach the ground (read: wear the shit out of your clutch) to get it to launch at a higher rpm, so that when you grab you grab near torque peak to take advantage of your engine's power curve.

Another way to do that with less clutch abuse is stickier tires for take off at the track, etc...

I sometimes don't even get my clutch pedal fully out all the way thru 1st gear at the track, in my car, even with drag radials mounted up...

The thing about this is, with SMG right now you are talking S54 engine. The S54 puts out 244 ft lbs of torque at 2000 RPM. Peak is about 270 ft lbs at 4500.

WIth that much torque and 3.64 rear gear and a 4.32 first, it takes a LOT of tire to need more torque at launch.

Exactly why you got hate your clutch if you want the best times at the track.

Trust me, I know, my car is putting down 290 ft lbs at the rear wheels around 4500 rpm, and my car, with me in it, weighs about 2970 lbs, I know all about traction problems, trust me-- it all comes down to how you handle the 3rd pedal.

I can't even let my clutch out fully for 1st gear sometimes, and on the shifts, I can't let it out all the way right away, I have to let it out gradually but quickly after shifting to 2nd, 3rd and 4th-- it's an art, no one said it was easy or practical.

I have gotten sideways at 93 mph on the 3-4 shift at the track on a prepped surface with my drag radials mounted up and set at 16 psi for a larger contact patch-- I know all about traction limitations and how to still get the most out of a car at the strip.

You need to launch high, near torque peak, if you want to cut some decent 60' times, and with drag racing, it's all about the launch...