was just wondering if there were, if any, similarities between the two types of engines? i know vvt-i is toyota's version of vtec for honda but i dont know much about toyota (first time owning a toyota/scion) i know vtec engage's at a certain rpm level. in my tc, does vvt-i (or however it is said) engage at a certain rpm level similar to vtec? i'm really foreign about toyota engines so if i sound ignorant as hell i'm sorry. i just would like to understand more about the topic.. thanks in advance..