Sorry, Reaction time does not make a huge difference in 1/4 mile times... in fact it makes no difference. You can sit at the light for a minute, then go and you'd still get the same 1/4 mile time than when you cut a perfect .500 light. The only time reaction time really matters is during bracket racing or heads up racing.DopeCelicaGT said:Yep thats correct man, sure did ran a 16.1 shifting through the gears from 1rst all the way to 3rd and crossed the line in 3rd, its all about a lot of variables man!! I expected it to run bettter than say when I took it to the track anyways simply cause my old grocery getter Corolla with a 1.6 in it ran 17.00's and it was a 4 door automatic so with the Celica weighing less and a bigger motor and near 40 hp more I expected it to drop a pretty good bit from the Corolla, however I admit that it was not my only time to run through the night, plus it was my fastest one there were many slower than that, it takes practice, correct launching technique, ummm you reaction time makes a huge difference!! And not to hat or anything but most people I have talked to on here with GT 5 speeds are running mid 15's at least!!! later!!