There is absolutley no way you got 21 mpg unless your trip was all steep down hill.

I think your 21 is a typo and should 12 .

My Dmax MPG is similar to Cody's,

 

I think it was 21 gallons per mile.

 

Sorry been working on the trailer. Trailer is a V-Nose. OK here it is 3:43 gears 20'wheels 2.5 pypes Borla Mufflers 4L80e Trans Header no Cats. Math was off " SORRY" 18.5 NOT 21. But still very happy. Lots more power. If anyone has every been from Columbus to Louisville lots of big hills. Got the 36 radiator in it and ran 190 the whole way trans ran 175 to 190 most of the way got up to 200 once. Sorry for the bad math 2+2 is 3.5 right????? I went through all the gas resent and it is a rock solid 18.5.Long weekend.
Truck

 

Yep you were right. But it was 18.5

 

Next trip is to Gettysburg PA. Lets see what it dose going to there.
Car at Cloumbus


Some Friends cars


Sorry again for the bad math.

 

My truck wont get 18.5 not towing anything! really nice car by the way!

 

I think it dose a little better than that not pulling but have not checked it. I am one of those guys that if every one is getting 20 I am getting 18. But had to check this as I was going farther before each feel up. Last year I had to feel up before I got to Louisville this time I was past at Peewee valley.

 

Those Novas Are fuggin sick! My fav. cars by far.

So you went to the good guys show last weekend, looks like a good time.

 

"Never Brag" The more I have looked at the numbers and seen what all you were getting. The more I thought something must be off. Will the odometer is read half what it should. Boy my mileage is going down fast from 21 now 9. Called the place were I got the cluster and he said he would send me a new one. I knew it was to good to be true but I am still very happy with the truck over all. The truck is running much cooler and lots more power. So all in all I guess I lied to all of you sorry for miss leading anyone dumb on my part for not double checking my number before I made the post.

 

No big deal man, the main thing is you finally got that damn thing running right and youre happy with it