Mystang07

I just made the 320 mile drive to my parents' house on Friday, and got just over 27 mpg. This was running between 70 - 80 mph on I-75 & I-70 through Ohio and Indiana. Windy as hell the whole way (driving into the wind most of the way). I was impressed with the mileage, and probably could have done better if my right foot wasn't so heavy.

Peace!
Scott

SemperFi789

i cant get past 200 miles no matter what i try

Jays Mustang

Another thing for you guys is not to go below 1/4 tank if you can help it. It exposes the fuel pump and can cause it to burn out prematurely. Keeping it submerged in gas keeps it cool. Just a little more info to store away.

billybix76

Semperfi789, I would seriously check your tune. If your running xcal2 tune at 93 octane you might actually be only getting 87-91 gas in the 93 pump (I can't believe a station would do that ! ...LOL) and throwing off your tune. run a tank of 87 with an 87 tune and see if it changes....

nonstopred

my gas mileage is crap now also....as soon as I got my exhaust I went from getting 16 to like 14/13. Do you think the fact that i have less backpressure could effect that or could it be the fact that I just wanna hear the exhaust more so I drive differently.

billybix76

Our cars are tuned for the stock exhaust and intake airflow to get 19-25 mpg. If you add more air than the ECM can compensate for in the stock fuel trim ranges and reduce backpressure by a great deal you could see drop in MPG. IMO I would get a CAI and tune matched for your mods to get it all back in blanace. The issue of reduced backpressure causing mileage drop has been debated for years but all my exhaust pro friends say it definately effects it...

nonstopred

whoops...[:-]