8th Generation Honda Civic Forum - View Single Post - Civic Si: Your Gas Mileage
Thread: Civic Si: Your Gas Mileage
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Old 05-11-2007, 09:30 AM   #151 (permalink)
urge31121@hotmail.com
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Join Date: Jul 2006
Age: 34
Posts: 121
I've had 29.9 and 30.2 on my last two tanks and that's NOT driving like grandma This engine just keeps getting better, I'm at over 30K miles now! I use a K&N air filter but that is the only "mod".
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