... The new Direct inject gasoline engines use pressures exceeding 1500psi. Try the 2.0 turbo used in the Pontiac Solstice & Saturn Redline or the LLT used in
big gas (lpg, butane, etc.) plants use mixing venturies with a manifold pressure sensing pressure regulator. it is purely mechanical, has a broad range of
Ford 160# injectors were originally used to gas phase CNG, you can pick them up on ebay, various fuel injector suppliers, or your local Ford dealer. Liquid
There have been propane powered cars and trucks in Canada back in the 80šs but that was when carbs were still around. I donšt know if that is still going on