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Old 08-23-2018, 08:31 AM   #10 (permalink)
EcoModding Lurker
Join Date: Aug 2018
Location: pennsylvania
Posts: 17
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First tank results came in at 38 mpg. I should have run a baseline tank with no modifications, but was too eager to get started on improvements. Looks like 1991 Civic automatic normally got about 27mpg combined. My driving was more highway than city, but it was also over hilly/mountainous terrain.
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