![]() ![]() The clutches within the DCT are ‘prepped’ to receive maximum torque once the brake is released, thus allowing for the exact torque output to reach the wheels as programmed into the ECU. This makes the DCT capable of countless launches with no real danger of transmission warning lights! A wet dual-clutch also manages to cope well with the heat created by the torque inputs, allowing efficient heat transfer when using the correct transmission fluid, thus protecting the clutches and transmission from overheating. Dual-clutch transmissions are the norm when it comes to launch control systems, as they allow for more seamless and faster upshifts than a single clutch system. While that is all happening at the engine side of things, the transmission also has a big role to play to convert the fury under the bonnet to a ridiculous 0-60mph time. Most rev limiters therefore are set to around 3500-4500rpm, which will naturally dip slightly once the torque has been released to the wheels. You may presume that the car should simply be red-lined to initiate the fastest start possible, but when powertrains are creating as much torque as they do in the current crop of performance cars, the wheels would simply spin up and waste vital turning the tyres into molten rubber on the road surface. This limit has been calculated by the engineers who programmed the ECU, finding the maximum torque output through to the wheels that will make for the fastest acceleration. The car’s computer also will have a pre-set rev limiter which cuts ignition to ensure that the engine cannot reciprocate any higher. The brake pedal effectively works as a trigger mechanism, with a sensor telling the ECU to engage the clutch to get the car going. ![]() Most of this performance trickery comes down to the programming within the cars ECU. Then it’s up to you to step off the brake from which point the throttle is specifically applied to allow for the least amount of wheel spin and maximum acceleration. The rev counter then hits a predetermined limit, creating a spine-tingling rasp emanating from the exhaust. Once the setting has been selected, the brake needs to be held down for a given time before the throttle can be floored. In the majority of cars, one has to engage a specific driver mode within the traction control settings to initiate launch control. ![]()
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