MPG readout

External Since: Sep 28, 2008 Posts: 15

I have a 2006 2500 with a Cummins. On the overhead readout, how accurate is
the readout for MPG. When you punch it, how long does it take until it gets
to a steady reading that's accurate?

Steve

--
"...the man who really counts in the world is the doer, not the mere
critic-the man who actually does the work, even if roughly and imperfectly,
not the man who only talks or writes about how it ought to be done."
Theodore Roosevelt 1891

External Since: Oct 28, 2005 Posts: 91

"SteveB" <toquerville@zionvistas> wrote in message
news:hjb5r5-ai61.ln1@news.infowest.com...
>I have a 2006 2500 with a Cummins. On the overhead readout, how accurate
>is the readout for MPG. When you punch it, how long does it take until it
>gets to a steady reading that's accurate?
>
> Steve
>
> --
> "...the man who really counts in the world is the doer, not the mere
> critic-the man who actually does the work, even if roughly and
> imperfectly, not the man who only talks or writes about how it ought to be
> done." Theodore Roosevelt 1891

Steve,

For some, the overhead is somewhat accurate, within 0.2 MPG. For the most of
us though, it is only a guideline to compare one tank with another; not that
it is what you are getting, but rather this tank is about the same as last
tank.

If you put in a programmer, you can increase your overhead as much as 10
MPG, but you won't find that anywhere close to reality.

FMB
(North Mexico with an '03 CTD HO)