Duramax

[NightBiker07]

So what does it hand calculate to?

between 30-32 down the Eway, 70 MPH loaded down headed on a week vacation. like i said, the newer low-sulfur fuel has had a negative impact, but it still hovers around 25 under the same conditions.

[hoofarted]

the newer low-sulfur fuel has had a negative impact, but it still hovers around 25 under the same conditions.

That ULSD does suck. So I run Wal-Mart 2 stroke oil to offset the lack of sulfur. Really quiets down the injectors and improves MPG. Note: this is only for diesels 04 or 03 and older...

[xr680r]

I mix a bottle of the deisel clean and the cheap two stroke oil from wal-mart. I use a pint per fill up and a quart when towing. With no tune I get 17mpg non freeway to work (58 miles round trip) and 20~21 mpg flat freeway calculated. If I run the preditor 120hp tune I still get 17mpg going to work but the freeway milage jumps way up to 24mpg if I stay under 70mph. At 55~60mph it is even higher but, who can drive that slow? The tune leans out the fuel mixture as long as I don't get on it and drive with the cruze on. I have to drive through Lambs canyon to and from work some I think the hills kill the tunes help but, on the freeway it is real noticable help in fuel milage. I have to calculate the milage because the dic is way off with the 120hp tune, it is reading 28~32mpg after I reset at the pump on the freeway. I get 11mpg towing a 27' toy hauler with more then 8000 pounds in it running no tune. I can set the tire size to be right on so the speedo and GPS are the same. Duramax LBZ 2006 6" lift 35" BFG's.

[teamdns]

bob are you jumping your truck already?

[youtube]http://www.youtube.com/watch?v=02ngMc3b ... re=related[/youtube]

[dannygraves]

Bob, I'm totally bummed about your truck...