There's something wrong in the analysis, then - because replacing the stock filter with a K&N improves mileage, if anything. Granted, like I said - you won't see dramatic changes, but they are there.

The other day I did a good mix of highway and local driving, with the A/C on 75% or more of the time, with two passengers (three people total). The tires were set to 34psi (a touch too high, IMO - go for 32). On the highway I drove anywhere from 65-80mph and I got exactly 17mpg. A couple of times I romped on 'er to show it off to the passengers (my parents). If I took off my BigPowderHound I think I could've gotten even a little more.

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