I get an idea to put LPG injectors as a first stage injection, and petrol injectors as second stage injectors above 0.3bar... VEMS already support 2 stage injectors, but, LPG doesn't have constant pressure, and it can't be used when engine cold...
Better solution would be 2 stage injectors but first stage (LPG) totally cut, when MAP rises above let's say 0.3bar...
In what phase those developer guys are related to bifuel on turbo engines?