Tuned my 515 detriot in my western star!!!!!

[Woodhauler]

After 6 years i finally got my 515 detroit to run rightr!!!!! Cost 5400$$$$ smackers But it gets 1.55 miles per gallon more and will pull its guts out now!!!!!!!!!!!!!!!!!! Why i waited this long is any ones guess! Never been this happy driving a truck in a long time!!!!!!!! Just step down on the thorrtle and things are all alive!!! Gained 2 gears on the hills! I'm a very happy guy now!!!

[isawlogs]

To some that 1.55mpg ain't much , bur I know that it is a whole lot at the end of the year. And those gears you no more need to use sure is plaesure and the end of the day. 

[Dave Shepard]

That sounds like about 30% better fuel economy. 8) A lot of people don't believe it, but the easier a truck works, the better it is in the long run, as long as you use the extra power appropriately.

[Woodhauler]

I think i will average 1 mpg gain on my fuel milage! Was getting around 4.0 to 4.30! Was costing me around 1 dollar a mile  just for fuel!  Should save around 20 cents a mile now! Doing 400 miles aday gives me 80 bucks back in my hind pocket!

[Ron Scott]

Great tune up!

[isawlogs]

It adds up real quick and the return on the money put out is not far down the road .  8)

[01crewcab]

Just curious if you see your mileage drop when you go from summer to winter blend diesel? Over the years in my 7.3L pickup I consistently see about a 1.5 mpg drop in the winter.

[sandhills]

Woodhauler, just curious as to what all you had to do?  I'd like to think I could get that out of my little 318, but I know better  :D :D

[MaineLogger]

Did you buy a Pittsburgh Power box?

[Woodhauler]

Did the pdi stage 2 turbo and had the computer reprogrammed!