Ok before I start, I haven't really researched it too much but I guess I unnderstand the basic concept of Vtec.

My friend was trrying to explain how Ivtec was a little bit better than Vtec, which I agreed, but his explanation was a little vague. He just said it makes the valves open faster...

I'm guessing but with regular vtec the soleniod activates it and oil pressure causes the cam to change for more duration and lift? So what exactly does the Ivtec do?

Please excuse my n00bness...just trying to understand..