Hey, I bought two and installed them in series and am now getting 22% better gas mileage.  I figure if I install four more I will be able to start selling gasoline back to the refinery. 

At 11:54 PM 9/17/2002 -0400, you wrote:

Matt,
 
Let us all know if those things really work.
 
Bob Smiley
N94RJ