Agreed LC is slower to 100 and our times were over 3.6 using LC. when we (09 GTR) and i use launch control the car tends to bog down of the line momentarily. this is because the car falls off boost for a split second before then taking off. The trick to a good 100 time is as everyone knows a great launch. So try gearbox R mode auto, VDC R mode or Off (prob better off), left foot brake holding reasonably firm but not too hard that the pedal is on the floor - smash the accelerator and as boost builds side step the brake pedal - what you are trying to do is release the brake at the same time revs are building and the engine is coming on boost, this gets the car off the line better doesnt bog down as much and should give you a better time. Dont hold the brake so hard that the pedal has to come right off the floor - that will bog down as well - you just almost want the car in a stall position and then catch the engine coming on boost thats the key. Anyhow this has worked for us so maybe give it a go, its a bit tricky but try a few times and see if you can nail it. Have to ask 09GTR what timing device we are using? Greddy? not sure.