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Originally Posted by pocon1
Don't a lot of pro dragsters use the same technology to launch, where the engine is computer-held to a certain rpm until takeoff? What's the fun in that?
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meh, kinda of, more F1'ish actually. The thing is, BMW started getting rid of throttle plates in some of their newer cars. Their VANOS system is the most extreme of the variable valve timing technology. Not only does it control cam phasing but also lift, and in turn throttles the engine this way. Some really cool shit. Helps in aiding launch control in the end
As far as launch control goes, its there so you can rev the engine and dump the clutch WITHOUT spinning the tires, for a perfect launch. In F1 this is accomplished by comparing the front and rear wheel speeds. If the back is spinning a lot faster than the front the ignition is cut and the engine speed drops. When the wheel speed sensors indicate that traction has been restored, the ignition cuts back in. If you watch an F1 car come through a corner in first gear and hammer the throttle on exit, it sounds like the engine is misfiring bad, since its controling the wheel spin. It makes the car faster since it allows the driver to keep his foot planted into the gas and just keep upshifitng.
With the VANOS engines, its easier to just adjust the "throttle" for you and optimize the shifts automatically. Here's a basic diagram from and aftermarket companies systems works. This one cuts fuel.
I love racelogic.
Where's the fun in it? Meh, it's more about being consitent and fast.