VVL and VVT

[TurboJ]

VVL = Variable Valve Lift and VVT = Variable Valve Timing, right?

So why can't I adjust timing when I can adjust the lift? It would make a big difference in engine characteristics at which rpm the valve timing would change and by how much.

[strop]

My impression was that VVT was adjusted along with the cam profile. Otherwise there's been discussions elsewhere about just how "adjustable" VVL and VVT should be.

[xABSOLUTIONx]

the calculations are automatic for VVT and it sets it at best possible location on the power band

same goes for VVL activation time