"Russell Kent" wrote in message
...
Tom Sixkiller wrote:

"Russell Kent" wrote in message
...

How does it vary from PRISM? http://www.gami.com/prism.html

I was speaking of _operationally_.

Both systems use capacitive discharge systems to make longer duration,
hotter
sparks. The GAMI PRISM system uses a pressure sensor in the cylinder
(part of
the spark plug assembly I believe) to measure the cylinder pressure during
the
combustion event. It uses that information to alter the timing of the
spark for
best performance. This also makes it compatible with varying grades of
fuel.
The LSE Light Speed has no such pressure feedback, but does use manifold
pressure and RPM to affect the timing and duration of the spark. I do not
know
if the PRISM uses MAP or RPM for timing curve manipulation.

Thanks...that increased my knowledge of ignition system immensely!!

I notice that GAMI's PRISM system offers/recommends a digital tach, so it
may be (guessing) that it's based on RPM.

I've heard that STC certifications are running wayyyy behind, so it may be
over a year.