Tuner question?
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Joined: Feb 2012
Posts: 69
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From: corona ca
Tuner question?
What's up guys I got a question I got a 06 screw 5.4 and did my gas mileage and got 11.3 and I'm all freeway driving. I normally get 14.5, but past month been getting 11. What would be causing such bad mileage? Any opinions will be appreciated