Originally Posted by mean-azz-acura
how bout vtec controllers, how do they work, and what are the pros and cons of having one? maybe vtec is tuned to open up when the horsepower levels and start to drop through the range, maybe thats why i dont really feel it, because its not really boosting the horsepower, just maintaining the power level where non-vtec usually drops off, which may be how the gs-r has a 8k redline that is practical. if im wrong, let me know, i know the basics of the function of the variable timing concept, but as far as hands on, though its my fourth teg, this is my first vtec...
a vtec controller by itself wont give you a whole lot. a vtec controller with upgraded internals that will allow the engine to breath better + time on the dyno will get you much better gains. with stock cams, vtec is best kept at it's stock engagement point.