[Bob's944]

I always noticed a bigger difference with in town driving. On the highway i get 28-29 mpg driving in 70-90 mph range. The higher draq of having the windows down and the air off is about the same as having the windows closed and the compressor on. Around town... rather just put the windows down and air off, I don't like the throttle response with the air on, and sometimes fuel mileage drops to around 20 mpg instead of 22-23 mpg.