Car Tweaker

hello everyone i have a question about a button a friend of mine has in his car(not nitrous) he tried explaining it to me but i think u guys might do a better job, okay he has a button that he presses to launch the car better he says when hes launching the car off the line he holds the button and then pushes the gas all the way to the floor but holding the button allows the car only to rev till like 3000 then once the car gets tracktion he lets off the button and the car goes full throttle he said it had something to do with the coil i think, now can someone explain this to me and how the wiring is done or whats involved? would be much appreshiated

Chim Chim

It's a button to operate his 2-stage rev limiter...

http://www.msdignition.com/rpm_6_sci.htm

Car Tweaker

thanx man