never tried it in a RST but used to in the cossie.

anti lag on, bit of revs, 2nd gear, 23psi, whoosh, lol, much faster than 1st if done right for me as it didnt bog down in the slightest and gave better traction.

lots of cars do it, i know of a fair few low 10sec and 9sec GTRs in the world that do it, i know of an turbocharged elise hillclimber that does, infact i think kev sharpe does too as his 7speeder has a mega low 1st gear.

try it, see what happens. its going to be as much to do with the cars traction and power delivery as much as anything else to know if it will be good for you.