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Old 12-20-2016, 11:18 AM   #13 (permalink)
TheOutdoorAdventure
Ecogeek in training
 
Join Date: Sep 2013
Location: BC, Canada
Posts: 14

Trout - '04 Honda Civic DX
90 day: 39.39 mpg (US)
Thanks: 2
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Update: Performance drop occurred, but after replacing spark plugs the performance returns. I'll have to wait until it's warm to test again, but it did not noticeably improve performance.
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