DVVT & VVT-i activated when you start the engine, and has a cut-off point when reaching 4000rpm if I am not mistaken. This technology is meant more for efficiency rather than power.
V-TEC and MIVEC in the contrary are activated only when reaching certain rpm, most V-TEC and MIVEC activation at is 5000rpm. (MIVEC got activated at 3000rpm? somebody know?) They meant for high rev to maximise power and suck petrol like no tomorrow.

This post has been edited by JrRetriever: Oct 13 2008, 05:42 PM

This is the best part like having orgasm!!!

This post has been edited by JrRetriever: Oct 13 2008, 05:49 PM

Then should ask the topic starter to refer back the old thread.

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Added on October 13, 2008, 9:02 pmHey, tongyam, same hometown weeee!! (OOpps! Off topic)

This post has been edited by JrRetriever: Oct 13 2008, 09:02 PM

Toyota is for ah sow.

L15A V-TEC system is different from those B16, where VTEC only switches between open/close one intake valve per cylinder and no exhaust valves are affected. So you can see how far it can go compared to 'big VTEC', isn't it? It just give you some added power at high RPM range for easier overtaking but definitely not a contender for their full power DOHC brothers B16s.
Honda has so many VTEC and i-VTEC variations. It is only fair to take apple-to-apple comparison. Same goes for MIVEC who also has MIVEC-MD.
Please correct if I get it wrong.