Ok i have a '94 Accord and i want to know more about two stage vtec on an F-22 thanks

 

i dunno about 2 stage vtec but it might be a dual stage intake manifold like the b18c1 has. at a certain rpm the second set of runners open up and it gets louder is that what your talking about?

 

I think it is an actual 2 stage vtec, I know that some of the JDM sohc vtec d15b's have a three stage vtec with two solenoids I think that it is more for economy than power though. I dunno but it sounds kinda cool