Q: the plan is run a volvo amazon with a volvo 5 cylinder turbo engine. but is it possible to run it bi-fuel. if it is, what set-up shoud i use?
A: Use config table switch feature, to switch between two configs - one for each fuel. This is just a switch between ground and a free analog input.
In theory you could use the fuel density sensor from flex-fuel vehicles, connect it to free analog input and use the anytrim feature to automatically affect the fuel calculation.