I was going to write a detailed diatribe about this apparently worthless
gizmo, but, like Ken, I respect the listee who installed it. I am glad they
felt some benefit. I remain highly skeptical.

From a technical-writing perspective, the sure sign that this thing is
bogus is the complete lack of accredited data on their site (dyno tests by
an independent lab), or write-ups in trade magazines. They try to give it
some 'credentials' by saying "AS ADVERTISED IN: ...", and by using big
technical-sounding words... "...a combination vortex generator, velocity
stack, and venturi, made of stainless steel, installed in the air path,
that extends the resident time between gas and air, maximizing vaporization
for better combustion...". Right.

Caveat emptor.

G. Matthew Bulley
Director
Bulley-Hewlett & Associates
www.bulley-hewlett.com
Cary, NC USA
888.468.4880 tollfree