I have been researching LPG and water injection lately.
LPG burns slower at slower RPMs and it burns faster at faster RMPs. Some tuning needs to be done for LPG converted vehicles. And from what I hear, it is usually a compromise (if dual fuel ability is to be maintained).
On the other hand, when water is injected the burn rate of the fuel slows down. Which could theoretically bring LPG closer to gasoline.
So after some study, if i can get LPG to behave like gasoline, my standard tune for the car would work very well in my opinion. That is what i would like my current goal to be.
I am adding some articles that i find to this thread mainly so that I can find them later on.