Reid Vapor Pressure?

[spewey at comcast.net (Spewey)]

Julie Macfarlane wrote:
> Ok. The Gov said the gas co's can sell a higher rated gas based on the 
> Reid Vapor Pressure.
> What is it?

It's just Reid's way to measure how easily gas evaporates.  Lower vapor 
pressure gas is mandated by state regulatory agencies in warm places or 
during hot months to reduce hydrocarbon emissions (HCs) which promote 
ozone generation.

Lower vapor pressure gas "can cause faltering acceleration during sudden 
wide open throttle applications. Conversely, if a racing gasoline?s 
Vapor Pressure is excessively high (above 8.0 psi), it may well result 
in vapor lock or fuel percolation hindering fuel flow from the tank to 
the engines induction under-hood temperatures are encountered."

http://www.241computers.com/ford/ContentExpress20-75-73.html

It doesn't have anything to do with octane so I don't know what your 
beef with Gov. Pataki is.  All types of gas have an RVP as well as an 
octane rating.  A higher RVP doesn't raise the octane but can affect 
performance in other ways.  Can you explain your question better?