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I don't think the propane is the way to go. LPG will clog up those DFI injectors, and the high pressure fuel pump you need to install for them (3,600psi for the gasoline, 36,000 for diesel). I think the spray pattern won't be that great for an MFI location.
I'd suggest you run E85 or methanol instead to take advantage of the latent heat of vaporization while using more conventional components.
That said, the company I currently work for has a sister brand in Italy called BRC that races a rally car in the Italian championship powered by an LDI system (liquid direct injection of propane using the super high pressure to keep it liquid all the way to the injectors). But those pumps and injectors are stock gasoline components as far as I know so it's anyone's guess how long they will last with LPG. Not sure if the LPG is better here or there in terms of heavy ends.
Propane also doesn't have enough lubricity to keep the high pressure pumps alive.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
Last edited by Flieger; 12-01-2016 at 06:54 PM..
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