I have only had the pleasure of burning 2 tanks of fuel so far with an average of 13 mpg.
I was wondering if the mpg would increase any after a certain period of time?

 

should get a increase after engine run in.

 

you might see a little increase after you change your oil for the first time, but gas milage mostly depends on how you drive( keep the lead foot off the gas!) There are a lot of things you can do to increase mileage, but you shoud first give it some time

Ryan

 

I know a CAI will give a bit of extra mpg, but are there any other things? I am still hoping to get that 04 QC hemi sport, and am going from a car with 30mpg so im kinda worried about it.

Thanks

 

just thank god you dont have a 5.9 mag...

i am getting 10.9 ( city) 13.9 ( hwy)

 

My mileage really didn't show a consistent change until I changed the oil to synthetic. That got me about 1 MPG around town. I'm right at 8K miles on the truck. So far i have put a drop-in air filter and synthetic oil. I have been searching for a muffler and recently contacted a company about their muffler which they claimed would increase mileage and power. You can read the thread and emails with the company. Here's a link.

https://dodgeforum.com/tm.asp?m=57793

 

yeah I too went from a car that got like 25 mpg to a 5.9...
Its bad when youget excited that you can pass the next gas station. And that doesn't happen too often.

 

If your only on your second tank of fuel I hope your still driving easy to break her in!!!!
MPG sucks to say the least but let the rings & valve seat in before you start really romping on her!!!!

 

Lets see 4.7L with 27K miles, K&N drop in filter, tonneau cover, glass pack, Airraid intake Tube, 33" tires i get 12 city and just did a 60 mile highay trip and got 16. Drive like a lil o man (keeps rpms under 2500 when accelerating). I don't think that there is much of anything that can be done to help. Kick *** and sukin gas!

 

You could always change out your rear-end to a 2.11 and put large diameter wheels on to wind out your gear ratio... that should have you going 75 MPH at about 1100 RPM... *snicker*