Bought a Superchip 'puter hoping to get better fuel mileage out of my truck. I know Superchip doesen't claim to increase the mileage, but it sure makes driving more fun. Here's some MPG results if anybody's interested.

Factory Setting: 1463.9 miles, 102 gallons, 14.35 MPG

Tow Safe: 2675 miles, 177.3 gallons, 15.09 MPG

Performance Tow: 1450.2 miles, 101.52 gallons, 14.28 MPG

High Performance: 392.9 miles, 27.05 gallons, 14.5MPG

Nearly all of my driving is about 70% highway and 30% city. My truck is a 4-door, 4WD, with the 3.73 ratio. I might add that I had the Tow Safe program in it for a trip from here to Upper Michigan and back, so it was nearly all "un-loaded" highway except for pulling a trailer with 2 snowmobiles on it for maybe 300 miles, hence the better mileage.

I had a '95 7.3 with nearly the same setup as this truck except it was a supercab. I could count on 17-18 MPG with it, and quite frankly, I've been disappointed with the MPG I'm getting with the '03.

Anybody doing any better? My next step in the quest for increased mileage is a different breather.

 

I drive similar conditions and the breather added almost 1 mile per gallon. Definitely worth the effort and the 40 dollars to do it.
scott

 

Yeah you'll really like the bigger intake. It will allow more air in so better fuel combustion, hence less fuel needed for the same power!!!!

Fire Rooster

 

I have the same setup on my 02 Im getting 18-19 on tow safe on trips over 100mi never checked the other 2 programs but thats keeping the rpm's just under 2000 68-69 miles an hr

 

Wannaburn,

Try the next setting up I think you'll find it to be to your liking and still have good fuel econo.

Fire rooster

 

how about fuel mileage on the older style scmt 1705's on the hi-po setting? anyone have any comparisons?

jeff

 

I have run all the programs just never checked mileage on them. Im thinking of getting rid of it and getting a flip chip

 

99f250,

Not sure what all the mileage differences are I actually have a predator. I love it. It is pretty close to the SCMT, but I found I get great fuel econo. with the 60 hp setting and just enough power to keep me happy. I drive like a normal driver but it is sure nice to know all the power in my beast is just waiting to come out. Look out rice burners.

Fire Rooster

 

I HAVE A 99 7.3 PDS AND LOVE IT. I HAVE JUST GOTTEN IT SO I AM FEELING MY WAY ALONG. i PUT THE SCMT ON THE TRUCK AND COULDN'T BELIVE THE DIFFERANCE. WHAT BREATHER SYSTEM DO YA'LL SUGGEST AND IS GOING TO A 4"EXAUST WORTH IT. 4' DOWN PIPE OR 3.5 THEN TO 4

 

Lew

get the gauges first before you put the SCMT in you'll burn up your turbo!!!!!!! Then get the 4 in turbo back exhaust. And tymar or airaid intake.

Fire Rooster

 

Fire Rooster Thanks For The Come Back. What Guages Do I Need For Sure

 

Start out with boost and pyro and then whatever else you want. There right take that out until you get the gages. Downpipe exaust and intake will help keep it cool but if you dont have gauges you wont know what damage may be happening

 

Thanks Wannaburn. Is It Better To Stay With A 3.5 Down Pipe Then Size Up To 4" Or Go 4" All The Way.

 

I have 4 all the way back. Make a new post and ask that very question somebody will know. All I can say is the pyro runs cooler with the 4. about 100 cooler

 

I Have A 99 7.3 Psd. Is It Better To Use A 3.5 Down Pipe Then 4"the Rest Of The Way Or 4"all The Way. I Have Installed A Super Chip Set At Tow Safe.