02 Expedition 5.4 Towing Tuner?

[ucop27]

I am looking to increase my gas mileage while towing, will any of the tuners do this for me? If so what kind of MPG increase am I looking at? Thanks.

[fordmdb]

Originally Posted by ucop27

I am looking to increase my gas mileage while towing, will any of the tuners do this for me? If so what kind of MPG increase am I looking at? Thanks.

To be honest you will find that most tuners will not increase your towing mileage but however, give you better overall performance while towing....Not towing is another story....for mileage improvements..

Good Luck

[FTE Ken]

It all depends on the custom tuning, if you datalog it and how good its tuned now. These vehicles vary quite a bit in performance and economy right from the factory. Sometimes there's a lot to be gained, sometimes now.

With proper datalogging a custom tune can be made which will squeeze more power and mileage out of it. On the 5.4 3-valves there's lots of power and mileage available even with 87 octane. On your 2-valve not nearly so much. Keep in mind if your truck gained 1 mpg its going to take the average driver more than a year to break even on the $375-$450 investment on a custom tuner. Your primary motivations for a tuner should be power and driveability, with mileage a secondary benefit if you're lucky.