Hybrid Car – More Fun with Less Gas

better mileage with higher octane? - Page 2

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Posted by * on January 2, 2007, 3:34 pm

In the scenario you describe, the improved performance would come from
physically advancing the timing - NOT from the fuel switch alone.

You could probably see a similar increase by just advancing the timing and
NOT switching fuels - but the engine might suffer.

The simple act of pumping $0 worth of "high test" into the tank of a car
that doesn't require it, really does nothing but improve the bottom line at
corporate headquarters.

Posted by Eeyore on January 2, 2007, 6:21 pm

* wrote:

I don't understand your point.

You can't just advance the timing willy nilly. In any case the ECU should
control it and any advantage will be gained automatically.


Posted by * on January 2, 2007, 6:40 pm


line at

I was thinking pre-computerized ignitions.

So, the ECU has been programmed to advance the timing within safe limits of
regular fuel....no more.

How do YOU get it to exceed those limits?

Posted by clare at snyder.on.ca on January 2, 2007, 7:14 pm

Depends on the ECU. Some can be "chipped" for more advance.Some OBD2
boxes can be "reflashed" Some that still have a distributor can have
the timing physically advanced. On some you can adjust the cam sensor
to provide more advance. On most, it's pretty well "cast in stone"

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Posted by Arnold Walker on January 2, 2007, 7:53 pm

With a performance chip set.......sold at any rod shop.
And while you are there pick-up your turbocharger kit....and if you want to
use premium
switch to bi-turbo.

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