[The Boss]

I've got the Superchips one & it does make a difference, but I'm only getting 16mpg on the highway unloaded with it.

Most of the time I'm running in performance-tow mode, not the full out performance mode.

It's a great truck - your going to love it.

[INJUNTOM]

Originally Posted by The Boss

I've got the Superchips one & it does make a difference, but I'm only getting 16mpg on the highway unloaded with it.

Most of the time I'm running in performance-tow mode, not the full out performance mode.

Difference in mileage or power?

[The Boss]

Originally Posted by INJUNTOM

Difference in mileage or power?

Maybe in mileage but slightly less power and it is supposed to be easier on the transmission. Knock on wood, but I've still got the original trans in mine with 217,000 miles on it.

[60man]

Originally Posted by The Boss

I've got the Superchips one & it does make a difference, but I'm only getting 16mpg on the highway unloaded with it.

Most of the time I'm running in performance-tow mode, not the full out performance mode.

It's a great truck - your going to love it.

I bought a old SuperChips and run in Tow Mode. Tried the all out set up and it flys..but would not consider it towing...asking for trouble with my A4OD tranny in my 96 PowerStroke. Towing my 9K trailer+ 2,300K camper I still manage 12 - 15 MPG..used to 16 -18-- I think reduction is due to wind reststance from camper..I think in a diesel it speed that kills MPG...not so much weight ?? My
I have got over 21 mpg dead empty..Honest Injun ) I think the bigger turbo down pipe and cold air box were best upgrades..& synsetic tranny fluid & gear oils. Still have cat converter.
The 7.3's are tuff..