Poor Fuel Mileage

Nervous to use the high flow filters since I'm doing quarry work and in the dust alot. Restriction gauge stays low only up about a bar or so until the filter starts to get a little age.

Tires are closed shoulder Yokohamas.

I guess I'll check the cooler anyway. Can't hurt. Leid diesel in PA did my tune and overhaul. Don't let anyone else mess with it.

I'll check those things you have listed. Not sure on how to figure out what series it is. Serial number I'm guessing. If you don't mind letting me know where to get that info I can see if it's a high compression engine or not.
My runs are usually at least an hour away so I'm getting highway miles. It's not all around town. I'm looking to see if I could improve it because we have some guys with similar setups doing the same work getting 6+. I'd be happy to see anything over 5 consistently at this point.

Thanks for everyone's insight. It's greatly appreciated.

 

Just about everywhere I run is at least an hour away. Spend alot of time running the Baltimore beltway so I see plenty of highway miles. Only around town long enough to load and get out. Several other trucks I work with have this setup and seem to get 6 or so. That's why I'm looking into it.
Thanks again.

 

Ok I will look into that also. I will be in touch with the shop that did my tuning and see if they could maybe cut the boost back in the tune. Maybe it would save some money on another turbo as this one is fairly new. If not maybe try the turbo swap. Thanks for the suggestion.

I will run with the new exhaust and filter for a few days and see how it's going. I will post an update. Thanks again

 

Boost gauge is in the dash. I'll pay close attention to that and see how it goes. Thanks for your input.