At what RPM VVT should be activated?

[jouna]

i know some crazy yaris mo fo's and they think the vvt-i is like a vtec and they put the vvti to turn on with a button and it actually gives them 6 whp can somebody explain dis shit!

[127.0.0.1]

Originally Posted by jouna

i know some crazy yaris mo fo's and they think the vvt-i is like a vtec and they put the vvti to turn on with a button and it actually gives them 6 whp can somebody explain dis shit!

only VVT-i L is the V-TEC style with 2 cam lobes. it changes timing, lift, and duration
VVT-i L almost doubles horsepower if properly engineered.

plain old VVT-i is not Vtec. single cam lobe. it just changes timing.