04-09-2013, 11:48 AM
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#9 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Few of the "easy" mods have a large impact on fuel economy. They each contribute a couple of percent here & there. It's when you put them all together that you start to see a difference at the pump.
One mirror: maybe a 1 or 1.5% difference. (Very rough estimate.)
Grille block: maybe a 2-4% difference.
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