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Discussion Starter · #1 ·
i cant figure out what the **** is up with my car. i have been getting roughly 35-40 mpg, depending on how much time i spend on the highway. in mid january it suddenly dropped down to 20-25 mpg.
i got new plugs, changed the oil again(synthetic), and got the ecu patch... if you have an 07 go to the dealer and get your ecu updated, it could misfire, its a factory problem, so its free... and found a faulty coil that the dealer replaced. the only thing i have yet to do i check my cone filter... i have a custom CAI, which requires tire removal to get to and its too cold this week to do that.

so does anyone have any other ideas of things i should check out?

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