mmmm.... ok make sense. well i reset the ecm for now and put a full tank of gas in there i will report back with the results. i know these trucks suppose to give 14 to 18 at around 55 mph. if i can get 16mpg i will be pleased. we will see.

 

still burning gas even after reset.

 

Getting any codes?

Read the plenum sticky at the top of this forum. That may be a contributor.....

 

I know I'm getting 11 in my 318 but I myself haven't done the plenum yet.

 

Im not understanding how a V6 can get 14 to 18 mpg on the highway at 55 mph, or any other speed, when it has to move such a heavy truck ?.


My 2008 dodge ram with a 318 gets 17 to 18 mpg at 65 mph. This is from every tank of gas.

 

I don't understand either. But all I know when I had replaced with a refurbished ecm about 8 months ago I was getting 16mpg.

 

Not getting no coded.

 

???????