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Old 06-05-2012, 01:38 AM   #3 (permalink)
Saturn Freak
Join Date: Mar 2009
Location: Richmond
Posts: 51

Freddy - '95 Saturn SL2
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If it's true that it advances ignition timing, it should help FE a little bit by going into performance mode once you're up to speed. The later shift points would more than negate that on acceleration, though. Accelerate in econ mode, but I'd say it's worth playing with performance mode at cruising speed to see if it makes a noticeable difference.
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