Question about 2001 Dodge Durango

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Is there a way to improve fueleconomy on 4.7 L 4X4 Durango's

I was told there is a businness in the Chicago area that re-programs the ECM for improved fuel econimy on many Chrysler products. I heard of this about four yeears ago but haven't heard or seen anything since. Does anyone have any experience with this. Mine gets the EPA rated economy, but I would like to improve that. I tried a KN cold air intake, but there was no improvement.

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Swap in a tcm for 2002 to 2004 jeep grand cherokee with a 4.7 and 545rfe transmission. you have a 45 rfe transmission and it is identical on the inside to a 545rfe. type in 45rfe to 545 rfe conversion on google and follow the dodge threads that come up for more details.

Posted on May 21, 2009

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My two cents as an observer: I have a Dodge Durango and my brother has a Ford ??? Suv. In an attempt to uncover ways to improve mpg economy we have talked to numerious individuals and in addition checked resources on the web, other. Our conclusion is that unless the mfg. has found a way to compensate ( by design change) for a 'bad' program in the computer what is there is what you have. From the standpoint of the computer It would seem that a program could experience a glitch and would have to be flashed again to restore (or improve with an upgrade program).
Advertisements for 'chip' driven devices that can be installed on the vehicle will analyse driving habits which could work to make improvements to save fuel. However this is really created to introduce the driver about human changes in driving that might help. Basically this is the only improvement that can be realized. These devices may help improve the drivers habits which could improve mileage but it is in the same ball park with regular maintence suggestions of maintaing optimum performance of parts (plugs, wireing, proper gas quality, tire inflation, etc.) It may be that some of the chip devices on the market to improve performance MIGHT have some benefit in improving POWER under load (hauling) but it seems mileage can't be tweaked mechanically or electrically. Personally I don't think added power can be created without engine modifications..
Exchanging the vehicle for another with better gas mileage, parking or driving less seem to be the only options to reach the improved economy goal.
I would appreciate and welcome any information that would have me change my mind.

Posted on Mar 07, 2009

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Nov 06, 2011 | 2005 Dodge Durango

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How to install performance module to 2006 lancer ES that will improve gas milage and add just a little horsepower


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