With the stock SBEC in my '92 running anything with higher octane than 87
does nothing but cost me more money. With the MP SBEC running 92 or
higher octane I get better mileage than with anything and the stock SBEC.
That's as long as I keep my foot out of it. Even when I use the extra
power from time to time I get better mileage than with the stock SBEC.
The first winter when oxygenated gas came out my mileage dropped from
about 15.5-16.5 mpg commuting to 13.5 to 14 mpg for the same trips. With
the MP there's only a slight change in the winter due to slightly longer
idling before driving off.
Larry
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