sure, slow down.

 

In a 12V!

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Is there a tuner that can be used on the bone stock 6.7 and achieve extra mpg? (without the deletes)

 

There are several chips that can be used on a stock truck... However, without the deletes, your MPG gain is going to be meager. The EGR delete itself will improve fuel economy. The atmosphere around us is 20%ish oxygen 79%ish nitrogen and 1%ish other gasses. To have fire you need 3 simple things in sufficient quantity. Oxygen, fuel, and heat. All that said, imagine replacing 10% of that oxygen with carbon monoxide, could you breathe? Sure but it would be hard and you (a human) wouldn't last long. Would fire be possible? An extremely small flame might start, but it would not be very sustainable with diesel as the fuel. That's basically what an exhaust gas recirculation (EGR) system does.

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recent trip from central louisiana to dallas, about 500 miles, all highway. going - with about 1200 lbs of people and stuff in the truck, cruise set at 70 pretty much the whole way - the truck did 16.4 hand calculated. coming back, with the truck exactly the same but pulling a ~18k 28' triaxle cargo trailer with a 9' interior height, cruise set most of the way at 60-65 and in tow/haul mode, the truck did 9.6 hand calculated.

lie-o-meter on the way there said 16.9, and on the way back it said 9.1. on stock trucks, the OH isn't too far off. i recall it was routinely about 15% high on my 06 when tuned, and about 20% high when i put the 19.5"x7.5" rims and toyo MT608Zs on it and used the smarty to compensate for the tires.

can't wait to see what the thing will do with deletes and EFI.

 

One thing to check into is your J35 recall sometimes sensors get clogged with soot which our trucks make alot of . So the best thing to do is call dodge and see if your truck is up for a j35 recall and it could be your sensor just playing tricks on you