vtec LIMITS the fuel and air at low rpms for economy reasons. it does not make more power than a regular valve train. a dual overhead cam is just like its stated, theres two on top of each head... little Hondas only have one head so...they are able to run 4 valves per cylinder, which creates better breathing, and more power. it does not assure more power, it is just theoretically possibleand with twice the valves there is twice the flexibility, so it will get you better low rpm efficiency and more high rpm power.low end power means right off idle, you know how that little Honda doesn't really do much till like 3500rpms, a ford inline 6 makes most of its power below 2000 rpms, so the instant you hit the gas, its on. where in the Honda you gotta drop the clutch at high rpm to get anything resembling power.have you ever seen a muscle car do a wheely? thats not the horsepower doing that, its all the torque.