LPG on VVTi engine

What is your question?

I'm tempted to mount a Prince VSI-2.0 Valve Care LPG multi-point injection system on the 1AZ-FE (VVTi) engine of my Toyota RAV4 (2007). It's a Toyota-accepted system, but I still wonder if I do not risk damaging the engine using LPG, which by combustion generates a higher temperature than gasoline. Is VVTi more sensitive to this phenomenon?