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Launch Control: Two Step Launch Control Explained

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Two Step Launch Control Explained


00:00 - A two step launch control is probably one of the most common ways of achieving launch control, so we'll start by dealing with the techniques needed to configure this.
00:10 The specifics of the set up will depend on the particular ECU, however the basic concept is still universal.
00:17 We need to start with a method that can signal to the ECU that we want to enter launch control mode.
00:24 The typical option here is to use a digital switch fitted to the clutch, or perhaps a button fitted to the handbrake or steering wheel that the driver can control.
00:34 An alternative option available in some cases though is to use the wheel speed input to indicate when the car is stationary, and hence should enter launch control mode.
00:45 Since I've mentioned clutch switches, it's worth discussing a couple of tips here than can help improve the performance of your launch control system.
00:54 Many people make the mistake of incorrectly fitting the clutch switch.
00:58 And this in turn can cause some frustrating problems with the way the launch control system disengages.
01:05 What we want the clutch switch to do is to switch right at the point the clutch starts to engage.
01:11 And understandably, this is going to be somewhere close to the floor.
01:16 Many factory cars are already equipped with a clutch switch, but often for simplicity this is placed at the top of the pedal.
01:24 It might not seem important, but this means that when you release the clutch to launch the car, the launch control system will remain active for a few moments after the clutch has begun to engage.
01:37 This can result in the car bogging instead of launching cleanly.
01:41 At the other extreme though, if the clutch switch turns off before the clutch engages, the engine RPM tends to flair before the clutch can bite.