Originally Posted by
mikesta21
hmm vtec the only system that does that?? i was pretty sure porsche used it in the late 80s, and whats that vvit or w/e system that toyota uses now?? and the mitsubishi one too? they try to make them seem like they do the same thing as the variable valve timing in the vtec.. do they?
Variable Valve Timing has been around for a long while... :dunno: I believe one of the European automakers started using Variable Valve Timing... BMW? I can't recall really... But Honda was the one that refined it to suite them. Yes, toyota has VVTI, Mtec for Mitsubishi, and Nissan has their own version also.