even tho our car cant handle as much boost, they really love it and get a lot out of each lb.

 

sorry, we did miss the question entirely. Take a look at a Jeg's or Summit Racing catalog, I'm not positive but I believe it's actually a button or sensor that reads your throttle and engages the NOS at full throttle.

But to comment on the comparison between a 35 shot NOS and a 7 psi turbo, I believe the NOS actually raises the compression more, since nitrous oxide is more condensed that atmospheric air. It puts a much harsher strain on the pistons somehow.