Haha..VVT-i is "Variable Valve Timing-intelligent"..it's
Toyota's technology to vary the timing of the valve as the name
suggests to save fuel..a lot of different companys have the same
technology but name it differently..Mazda is VVT, Honda is
VTEC..Honda's system is slightly different..
VTEC was first used in F1..last time F1 cars can fit
turbochargers..but after the governing body ban the use of turbos,
Honda came up with VTEC, which works like a turbo..and gave a
normally-aspirated engine amazing powers..they soon fitted VTEC to
their cars..but on the cars that they fit VTEC, it's more for fuel
economy than power..but it does produce more power if you rev the
engine hard..unlike the VVT-i in Toyota..which is strictly just for
fuel economy..the VTEC used in Honda's Type-R cars is totally
different..the VTEC is TOTALLY tuned for power and not economy..and
that's why you can squeeze 237bhp from a 2.0-litre VTEC engine in a
Honda S2000..a normal 2.0-litre engine will only produce an average
of 140bhp.. 
