Just curious MPG in your 4.7l
Champion
Joined: May 2006
Posts: 4,616
Likes: 0
From: San Diego
RE: Just curious MPG in your 4.7l
ORIGINAL: De pinga!
Is that why they're offering a HEMI upgrade at no extra (supposively) cost now you think?
Is that why they're offering a HEMI upgrade at no extra (supposively) cost now you think?
Record Breaker
Joined: Jan 2007
Posts: 2,451
Likes: 0
From: CA
RE: Just curious MPG in your 4.7l
ORIGINAL: dreman
The hemi has the MDS, which helps at normal freeway speeds. It doesn't do anything the rest of the time, though, so the 4.7 does better then.
The 11.2 mpg stated above was for E85, which is 85% alcohol, 15% gasoline. Alcohol has less heat energy in it than gasoline, so you have to burn more of it to make the same power. The engine computer automatically increases the fuel flow when you run E85 to compensate.
The hemi has the MDS, which helps at normal freeway speeds. It doesn't do anything the rest of the time, though, so the 4.7 does better then.
The 11.2 mpg stated above was for E85, which is 85% alcohol, 15% gasoline. Alcohol has less heat energy in it than gasoline, so you have to burn more of it to make the same power. The engine computer automatically increases the fuel flow when you run E85 to compensate.
All Star
Joined: Jan 2008
Posts: 778
Likes: 9
From: College Station
RE: Just curious MPG in your 4.7l
i get around anywhere from 12-23 mpg acccording to the over head comp....sometimes i think its wrong, because theres one street here in college station that it says i get 23 mpg.and its only a 40 mph street...so i have no idea if its right or wrong but thats what it says anyways
