Are you running the 4.0 programming or switched to 4.6? Real curious on mileage

 

4.0 comp. Seems it's doing fine with it. Self learning comp? Down to a 1/4 tank so I'll post mpg's once I'm empty.

Before intake and exhaust I was getting 14.6 mpg's. Mix of city / Highway & running premium gas (I'm use to it).
No clue what the mpg was before the rebuild....

 

16.8 MPG's thus far after 3 tanks of mid grade. ZERO over heating issues and she's running at 180-185* with a 195* t-stat. Very pleased.

 

Engine pinging on mid grade?

 

None whatsoever.

 

Any codes?

 

ZERO codes, none pending. I am so glad that she hasn't acted up or anything after all this maintenance/modifications performed. I was expecting some tuning or fault codes but nothing thus far (knock on wood) other than the first start up tick I had and the lower leaky oil cooler line not tight enough. No leaks whatsoever from engine or cooling system. She's running superbly

 

resurecting this, hows your mileage been?

 

After the leveling kit and new meatier tires, down to 13.8 mpg's... I was at 16.4-16.8 mpg's before the leveling kit and new tires.

 

what was the tire size before/after? thats one hell of a mpg drop