Hello all,
A project was tried some time ago (30+ years now!) on a Pontiac Fiero, which investigated the effects of completely vaporizing the fuel before combustion.
A heat exchanger was put in the intake system, after fuel mixture, to create enough heat to completely vaporize the fuel.  Because of pressure loss due to mixture expansion a turbocharger was used to achieve the same output power.  My memory is of a 40% improvement in BSFC or 40 % power improvement depending on turbo pressure.
The work was done by Smokey Unik (sp) of "The Best Damn Garage In Town" fame, and was reported in either Hot Rod or Car & Driver magazine.  I saw the vehicle at the GM proving grounds while involved in a college project in 1978 or '79.
Dan F

"40% improvement in BSFC"

I doubt that.

Paul Lamar