For the record, this has to be one of the most recurring posts, but I've had some recent changes, so heregoes.
It took about a year for my car to "break in" enough to get decent mileage, I bought my car in June of 03. Prior to this summer, I was pulling a pretty consistent 26-27mpg. that's a combination of town/highway driving (fairly small town overhere, so lights are few and far between, little traffic etc) Just now since the summer's over and I've stopped being an AC weenie, I've broken into the 30's, but that only seems to be freeway driving. aroundtown I'm still inthe upper20's. It's nice, though to pull 400miles+ off of a tank allthe while dragging 3bikes through the wind, and toting a bunch of friends. This is why I have this car...
oh, as far as specifics.
03 P5
stick
ractive SRI
I had an exhaust on for awhile, adn couldn't really tell much of a mileage difference. I could feel the backpressure diff, but the gas tank didn't tell any tales. The intake is questionable, I'd imagien it MAY be good for 1mpg, infact I may soon switch back to my stock box jsut to see what I can pull with it.
word to the wise, abuse of remotestart=bad mileage... I think at the peak of the summer here when it was consistently in triple digits, and I was "cooling" my car forlike 15min before getting in everytime I drove anywhere, I was barely hitting 20mpg. worth it, though.