howe719

hello i own a 05 cummins AMAZING truck love it.. what is all the talk about the chips and the "things" that mount in the truck where you can change the hp and torque and everything.. is this true.. i have a MRBP dual exhaust and i just really want to knwo what i can do for better MPG i heard one guy say something about gettin 24 to 28 with a **** race chip or something is this true.. help me guys Thank you i am not really not worried about hp the **** thing is like a tank as it is i am look for better mpg thanks guy

Dorkweed

24-28mpg is dream world stuff unless it's all down hill with a tail wind to boot!!! Fill in your signature with information about your truck and there are plenty of folks here to set you straight!!

robert chilton

I have seen 24 MPG in my truck twice but average it 16.5-18.5 MPG after nearly 25k miles. Those high numbers are from looking at the overhead which is thrown off by the performance boxes. The boxes raise the fuel rail preasure so more fuel gets ingested than the trucks computer thinks. Boxes start at approx $300 dollars and go up depending on what you want. Gauges are a good bet too. Some people see MPG gains from running a box but it takes alot of self control to keep out of the throttle. Most people seem to stay the same or loose MPG.

howe719

thank you for tellin me about the signature thing i didnt understand that part..

texaspower19

quads boxes help mpg pretty good depending how u drive

displacedtexan

I couldn't have said it better... If you drive the same most boxes will help MPG some. But most of us get boxes, and use our new found power. Thus mileage stays about the same. But the fun factor goes up.

howe719

ok everyone is sayin the fun factor goes up...can someone tell me or explain like how much difference you can tell in the truck... also maybe tell me a good quad box for me like web site or something.. also are these boxes even good for the truck.. i dont want to break nothing thanks guys

wileyc

You can usually feel a nice difference when you add a module. The best module for you would be the Quad XZT. They usually give a nice increase in fuel economy (if you drive normal) and are VERY inexpensive. A smaller box like this is not going to hurt your truck at all just make it run better. Here is a link to some more information on the Quad Box: http://quadzillapower.com/products/xzt-series.html

graphitecumnz

repeat after me, mileage is more about how/where you drive the truck than what you have plugged in to the engine. It can't be said enough. You can get horrible mileage on a stock engine just as easily as you can with a modified engine if you drive it like you stole it. If you race stoplight to stoplight for an entire tank, don't expect good fuel mileage. If you run 70 mph on the interstate for 8 hrs, chances are you're going to see good fuel economy. That said, it's hard not to play once you add power....

rebal

Theres gota be more to the milage thing here . I have 2 2001s 1 is an SO the other an HO both have 3.54s the so is a DRW so I take that into account but still the SO gets 15 -16 mpgs the HO gets a solid 20mpg and i have seen 1 tankfull get 26 and if i drive at 60mph I can get 22-24 and thats with a catcher and mach 1.6s.I sure wish i knew what was causing the big diff. in mpg? it must be the way there set up on the assembly line

robert chilton

The new ones are real fuel quality sensative. Its easy to gain/loose 3MPG depending on the gas station. Then figure in that the common rail have high boost and fueling parameters coupled with more emissions makes it easy to see. I have read on here that the common rail have 6 degrees less timing built in and the 3rd injection event. All adds up to burning more fuel. I added a quad standard box to mine recently but it will be a while till I can post MPG figures.

RickCJ

A 2500 will get 2-3 mpg better than a 3500 and a 6 speed will get 1 mpg better than a 5 speed. And a 2wd will get 2-3 mpg better than a 4wd.
Both your trucks seem about right mpg.