I know what you guys are telling me about the anti lag it's not really a necessity thats why I was thinking about having a switch for it so it's not on all the time, but if it is to much of a hassle then I guess I could always leave it out. For the FFS I was given two different ways to have it setup- ''If you wanted to run flat shifting every time you use launch control you wouldn’t need a speed sensor. To fit a clutch switch, wire in and set up, as well as fit a toggle switch to allow you to turn launch control on and off'' and ''If you wanted to run launch control with no flat shift function it is best to run a speed sensor so the link can de-activate the clutch switch once you start moving''. I won't be using FFS every time I drive the car so would you guys agree having it set up with the second option would be the way to go?