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Old 09-24-2011, 06:17 PM   #4 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
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Yup, over 10 mpg.

It was such a big change because the mods permitted the car to operate in lean burn 100% of the time at 80 km/h, where without them it felt like it was on the edge, moving in & out of lean burn at the slightest change in throttle position to maintain that speed.

In other words, the % change might have been less impressive if I'd tested at 70 km/h or at 115 km/h (either fully in, or fully out of lean burn for both A and B runs).

I didn't plan it that way, but it was interesting to discover. I tested at that speed because it's the highest posted limit on the secondary roads I usually travel.
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Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
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