Hey guys, I haven't studied all the details on the mechanical differences on the 1zz VVTI and the 2zz VVTLI but I know there's a somewhat significant difference. I was able to search and find that the 2zz changes cams at 6000rpms but I wasn't able to find out when the 1zz changes over. Can anybody answer this for me? Maybe there is a margin of error where it doesn't always engage at the same time? If so roughly when? It's hard for me to tell exactly when but my guess would be 5000-5500 from how it sounds. I'll study up on it later but I'm just looking for a quick answer here. Thanks guys!