I just got back from an 800 mile round trip vacation to North Carolina and the truck averaged over 19.5mpg!!! I usually averaged about 16mpg on the highway so this was a huge increase. The only change to the Lightning was adding the JLP Ram Air box and I ran a 3 inch duct from behind the lower grill to the box. Has anyone else seen this kind of mpg with a ram air addition? Thank you JLP!!!

 

How do you guys measure your gas mileage?

 

Must be down hill all the way.


Jerry

 

I have the JLP set up (Not Ram Air tho). I would get 13-14mpg before and now I get mostly 14 and ocasionally a 15mpg tank now.....but mostly 14.something (((I don't count the 11mpg tanks because I know why I get them ))). I did take a trip from NewOrleans to Bowling Green Kentucky and go 17.something mpg going up there. I was impressed.....thats the only time my truck has gotten THAT kind of economy...if you can call it economy.

 

Wow! 19 1/2 you must have had your cruize control set at 55
Thats great in any case.

My best on the 04 was 16 1/2 and that was before my JLP air.
Whoooo Hoooo. This is a good thing.

 

Ummm....How can you guys tell how many MPG you are getting!!!??????

 

Step 1: Fill tank completely full
Step 2: Reset trip meter
Step 3: Drive around
Step 4: Refill tank
Step 5: Divide miles you drove/Gallons put in truck

Example:

350 miles/20gallons = 17.5mpg

 

you beat me to it

 

I'm prob lucky if I'm getting 9-11 on an average
BUT LOVING EVERY MINUTE

Great mileage Rick
Someday when I want to get depressed again,
I'll re-check mine

 

LOL, well said.

31C

 

Rick thats awesome

I have found on long trips you do get much better highway millage. You get in a cruising mode, since you know you have so far to go anyways. Not like when your driving around your home, even on the highway. The you say what the hell and be like RobO and have fun with it all the time.

Coming back from Ohio, I had miles of open road and got into a rythem at about 75 mph, I got up to speed and just cruised the whole tankful. I too got over 19 mpg on that trip.

 

How is that possible.... so I need a built block to get good gas mileage???? More HP and Torque... ill be lucky if I get 13 or 14 doing 75... something is wrong here

 

Can honestly say I NEVER checked the milage in either of my Lightnings

But I did check the LTD's ...........ONCE! 7.5mpg

 

My old 77 Jeep Cherokee Chief with Quadratrac got 11mpg on the highway one time.!!

Back in the day when gas was 88 cents a gallon..LOL

 

Road trips are better mileage, especialy with auto-trans. stop & go ! nice mileage hope mine does that when I'm finished with mods btw what are your mods ?