Only Getting 12.7 MPG any ideas guys

[BigGrnJeepTug]

Your exhaust is throwing your code. Prob time for a "fingerstick". check out kennedy diesel.

[gr8shot]

The EGR code shouldn't be a problem. Or at least not one to cause bad mileage. You might try cleaning the MAF sensor as well. And I agree jack it up and spin the tires. A stuck caliper could be dragging and causing bad mileage. Of course check the air filter, but they'll hold a lot LOT of junk before restricting flow significantly.

[sunnysideautomotive]

I am going off the gallons used.

[Hondarider552]

Dont go off that.

With your BD, it will scew the readings.

even my stock tuning is +1 off.

[Toypuller]

Check your intercooler piping for leaks.

[Kst8er]

i was getting "poor" mileage until i changed my FF & then towed my RV 700+ miles... now i'm getting a steady 18+ mpg in 75/25 mixed driving of hwy/city traffic

[mrmanners]

Originally Posted by sunnysideautomotive

Only Getting 12.7 MPG any ideas guys
2006 2500hd
Volant cold air intake
4inch exhaust no cat
Bullydog outlook
New fuel filter
New oil

only getting about 260 miles a tank.

I have the same truck. Mine is stock other than Edge evolution. Before I made the changes below I was getting 12-13 around town. Now I am running AMSOIL synthetics, their fuel concentrate and cetene booster (at every fill up).

Now I am getting 15.8 (manual calculation this morning actually) around town and about 17 on long trips. That is with a fairly heavy foot.

If you would like some information on anything just shoot me a PM.

Have a great 4th of July weekend.

Take care,

[sunnysideautomotive]

I pulled the intake to find the egr gunked up .But not pluged . What is a finger stick? Thanks Guys

[seth999]

idk im runnin 37" tires and a quad. on lvl 90 or 110 and getting 14-16 when im on it hard