VVTL-i kicks in harder then VTEC, some owners of Preludes / Civic Si / GSR say they can't even tell when it comes on, just the sound gets louder. Although you gotta be pretty dumb not to know, the transition is very mild. But VVTL-i is really strong and you can feel the rush. Its even a tad better then on the Integra Type-R (I read this on the www.clubrsx.com
). i-VTEC is like VVTL-i, but you can't feel i-VTEC, the transition is too smooth. Many guys on clubrsx complain that they can't feel shit, but certainly the power is there. In the end VVTL-i still is superior as it varies timing & cam phasing on both Intake
& exhaust valves (I-VTEC only does it on the Intake
the reason lift is more noticeable is because we have such crappy low end performance. in a car like mine and most anybody in a gts running the power fc, you wont feel lift kick in. this means it's actually less efficient then the way the rsx has it. not the other way around like you're trying to make it sound.
also you have your facts backwards.
celica = variable Intake
RSX = both intake and exhaust side are variable.