VVTL-i is a much different system than VTEC. the intake cam on any VVT-i engine can vary the intake camshaft timing -5 to 20 degrees at any engine speed. VVTL-i includes lift which enguages a higher lift cam profile on the intake and exhaust cams. this happes at 6000 rpm. you all know how VTEC works, iVTEC is pretty much the same deal with actually being able to vary the camshaft timing.

FYI, toyota introduced their first VVT-i engine in 91 with the 4A-GE 20 valve engine. the fifth valve actuated at a certian engine speed too. gee whiz