mileage killer?
Elder User
Joined: Dec 2001
Posts: 713
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From: C H I C A G O
mileage killer?
I would have to say the ol lead foot is the real killer. I just installed the Superchips tuner , and my milage dropped bigtime , gues si am just playing with the added power too much.....plus the damn winter diesel is adding to the drop in milage...........
Mountain Pass
Joined: Oct 2002
Posts: 197
Likes: 0
From: Limington, Maine
mileage killer?
I'll bet the lift has more affect than the tires.
Frontal area is one factor in drag. Since very little air slips under the vehicle, the lift directly increases frontal area. And drag increases exponentially with velocity, so the impact of the lift is even greater as the speed increases. Plus the Ex is not very aerodynamic so I'll bet it has significant drag.
(sorry for the technical stuff... but it's the engineer in me and this is what I went to school for
)
Frontal area is one factor in drag. Since very little air slips under the vehicle, the lift directly increases frontal area. And drag increases exponentially with velocity, so the impact of the lift is even greater as the speed increases. Plus the Ex is not very aerodynamic so I'll bet it has significant drag.
(sorry for the technical stuff... but it's the engineer in me and this is what I went to school for
)
New User
Joined: Nov 2002
Posts: 4
Likes: 0
From: goodyear
mileage killer?
what kind of mileage do you get with the psd in town ?
what kind of mileage do you get pulling a large travel trailer, approx 9000-10000 lbs? any comps would be appreciated. my 02 psd gets 15 solo in town and 7 pulling the tt on the hwy. can this be for real ?
what kind of mileage do you get pulling a large travel trailer, approx 9000-10000 lbs? any comps would be appreciated. my 02 psd gets 15 solo in town and 7 pulling the tt on the hwy. can this be for real ?
Senior User
Joined: Sep 2002
Posts: 150
Likes: 0
From: New Orleans, LA
mileage killer?
I would have to agree with rozett. I currently go to an aviation school out here in Arizona, and we talk about this sort of stuff all the time. While drag increases by a factor of 2 with velocity, power required increases by a factor of 3. So when all that "undercarrige stuff" is exposed, the "flatplate" area, aka everything hitting the freestream, increases. This causes more drag, requires more power, and, you got it...more go pedal! But, like we all say, the NUMBER ONE killer to MPG is the heavy foot(sure is fun though!).
Morgan
Morgan
Elder User
Joined: Dec 2001
Posts: 713
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From: C H I C A G O
mileage killer?
My average around town MPG in the summer is around 15.3 or so.The best I have seen on the Tollway was almost 20. When i tow my racecar to the track , i usually get abest of 13.5 or so...My truck seems to be hit hard by the diesel change in the colder months..The best i have got in the past two weeks has been 12.0.....
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Senior User
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From: Brentwood TN
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