On Tue, 1 Mar 2005 23:50:28 -0500, "Morgans"
wrote:

You know how some people with cars put hi octane in, thinking it is going to
get them better performance? Waste of money, since no more power is
produced, without re-tuning the engine, but no problem.

Unless it's one of those engines that has computer controlled
individual cylinder timing using a knock sensor. Those things will
retard the timing if knocking is sensed, and advance the timing as far
as possible when knocking is not sensed.

I remember seeing a Saab with such a system being dynoed using regular
first and then high test. The engine gained some power, although I
don't remember the exact figures. I just remember that it did gain
some.

With engines that do not have constantly adjusting timing, you are
correct, using high octane gas won't make any difference in power.

Corky Scott