gas milage i have a 2002 4.6 with about 126000 miles on it..tru dual flowmaster 10 series with magnaflow hi flow cats with a full length tail pipes
i keep it under 2000 rpm's at all times and i ride with the A/C totally off and both windows rolled down and i get 17.3 mpg

so my question is, is it better to ride with the windows down (which i assume creates alot of drag) or keep the windows up and turn the A/C on

 

Depends on if your on the highway or around town.
On the highway,,running over 50 60 or 70 MPH your best to put the air on.
Around town in stop and go traffic,,,your better off with the Air off and the windows down.

Phil

 

ohhh ok dude thanks...and yea i do most of my driving at 70 mph for about 30 minutes