chipping a 7.3 powerstroke

93gsxturbo said:

MPGs like a gasser will) less if you are going 90 MPH on the highway.  

With the guys claiming 20+ MPG on the reg, I call BS.  You may have done it once - for 10 miles - at 45 MPH empty down a slight grade - with a tailwind.  Or in the case of the Ford guys, you have a programmer and still believe your overhead readout (mine says I average around 30 MPG because the tune messes with the accuracy) But you don't see it in daily around town driving or running down the freeway at 80 MPH, even empty.  Its a big brick with a lot of rolling resistance and a lot of mass to start and stop.  

Also though it's a half ton I get a real world 22 mpg city and 28 mpg hwy in my Ecodiesel Ram. Full payload 24 mpg hwy.

In reply to 93gsxturbo :

it doesn't matter if you run it in 4x4, the transfer case even open will use up some mileage. 

OK.  I'll jump in and lower the average IQ of the thread even more :-)

Mine is 99.5 F350 crew cab dually.  4 X 2.  4.10  DP +80 Economy is the only tune I run.  Otherwise a stock truck as far as I know.

Running empty i got 17 mpg once.  Every other fill up has been between 14 (mixed) and 16 (highway).  I run 55psi in all 6 Yokohamas.

I don't know where these 25 mpg 4x4's come from.  Wish I owned one though.

oh, and Monteagle?  Now I can't get that stupid Smokey & the Bandit song out of my head

"...the Monteagle grade was steep and long and everybody could see him thought The Bandit was gone..."

Monteagle is not a big mountain. Actually, it’s not a mountain at all, it’s a plateau. 

But it IS one the the steepest Interstate gradients in the country, has some awful turns, and left hand runaway truck ramps force runaways to cross oncoming traffic. It has killed a lot of truckers. 

In reply to A 401 CJ :

I’ve never heard of a dually getting 20+. You are spinning a lot of weight when spinning 6 big wheels. 

Your 4:10s aren’t helping you either. 

And 55 psi may also be hurting. The OEM factory recommendation is 70 psi on the rear (and 60 on the front IIRC)

SVreX said:

In reply to 93gsxturbo :

Ok, so you are saying that the brodozers are not being honest, and you wanna drive a truck like theirs, but also want it to live up to their unrealistic claims?

 

I never wanted to live up to the claim, I am comfortable with my 15 MPG.  Here in Sconnie, diesel is as cheap as regular these days!  

I was mainly cautioning the OP and anyone else who would listen that the claims of 20+ MPG diesels is definitely "trust but verify" with the statement leaning toward "distrust but verify".  

Sure I could get a 2WD, run some fleetline tires on it, and get 20 MPG, but no one will think you are a big man with a truck like that.  

In reply to 93gsxturbo :

Your posts here confuse me. 

93gsxturbo said:

SVreX said:

In reply to 93gsxturbo :

Ok, so you are saying that the brodozers are not being honest, and you wanna drive a truck like theirs, but also want it to live up to their unrealistic claims?

 

 

Sure I could get a 2WD, run some fleetline tires on it, and get 20 MPG, but no one will think you are a big man with a truck like that.  

I see you center your post on this subject around what others would think. It doesn't matter. 

In reply to 93gsxturbo :

But most people don't care if someone else thinks their truck is manly.  They care if the truck does what they need it to.  So if they never leave pavement, a 2wd with highway tires is perfect.  Less weight, lower so less aero drag, etc.  And probably cheaper to buy too.  Plus lower load height and usually a little extra payload capacity.  

How about this. I recently worked on a stock Duramax that was getting ~20mpg and i didn't think it was worth it because of the constant horrendous engine noise permeating the cabin.  If i could have poured a gallon of diesel out every now and then to make it shut up i would have liked it better. 

People like diesel trucks because they like them, not because they are inarguably objectively awesome. 

Diesels get better mpg and last a lot longer, esp if used for towing. They cost more to buy and more to operate for repairs. 

rslifkin said:

In reply to 93gsxturbo :

But most people don't care if someone else thinks their truck is manly.  They care if the truck does what they need it to.  So if they never leave pavement, a 2wd with highway tires is perfect.  Less weight, lower so less aero drag, etc.  And probably cheaper to buy too.  Plus lower load height and usually a little extra payload capacity.  

For most people, myself included, acting manly means my diesel truck is doing what it is supposed to do.  Even without ever planning to leave pavement, I wouldn't be caught dead with a sensible fleetline or highway tread tire, reasonable exhaust without a giant tip and with one of those muff-lers, or enough stacked programmers to make a 4 lane highway looks like a wildfire was in progress.  I mean - come on, how cool is that?  Your truck wasn't obnoxious and smoky enough with one programmer, so you plug another programmer into your first programmer and now all of a sudden its super awesome.  Stacked programmers was one of the coolest things about the 24V Cummins trucks.  

Sorry, I can't hear the rest of the background chatter in this thread over my new Chris Stapleton CD.  Are CDs still a thing?  I meant iTunes download.  

In reply to 93gsxturbo :

Again... I’m confused. 

In reply to SVreX :

Me too. If someone wants a monster truck and still get 20 mpg, one must change the laws of physics.