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Old 08-28-2008, 05:26 PM   #2 (permalink)
cfg83
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Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
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sporkinum -

Welcome to EM!

I agree that a gas with more energy content could get you better MPG. But, I am also guessing that other members would suggest doing a longer test with gasohol because of the tank-to-tank variance. Maybe the ECU/PCM hadn't adjusted to it.

I got lucky with my SW2 because I could swap in an economy 5th gear from an S?1 :

http://ecomodder.com/forum/showthrea...swap-2779.html

I don't know anything about the L-Series manual trannys. If I had one I would be scouring the earth for a compatible taller 5th gear.

Hrmmmmmmm. The Chevy Cobalt XFE has a tall 5th Gear and uses the Ecotec (2.0 or 2.2, I can't remember). IF (big if) the trannies are the same, there may be a taller 5th gear in your future :

http://ecomodder.com/forum/showthrea...lass-2040.html

Hrmmmmmmm #2. The Saturn Astra also has an Ecotec engine. It may be worth looking at it's tranny spec also :

http://ecomodder.com/forum/showthrea...tank-3803.html


CarloSW2
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