Performance Enhancements vs. Fuel Mileage

[gdbontly]

I did a search and found a little info on this subject, but I'm gonna ask for more input anyway. A friend at work has a '05 3500 4x4 DRW, which they use to pull a large 5th wheel. Their nephew told them about a "performance chip" that he is using on his similar truck, which he used for "farm work" (pulling cattle trailers, etc) that is giving him fuel mileage in the mid to uper 20's. He said he had it installed at a Dodge dealership (so as not to void his warranty) for around $900. Does anyone know of ANY performance modification that would give you that dramatic of a mileage increase?

 

[tschwab]

You will never see an '05 CTD 3500 4x4 dually get mid to upper 20's. And no, there is not a "DC" chip being installed. Your friends nephew may have gotten his dealership to install some type of "aftermarket" chip/box/tuner but this is not a DC approved or manufactured item and "could" void the factory warranty.

 

[Tim]

Sounds like the 100 MPG carburators from the 80s are back.

 

[Big P]

Ya, he is probably looking at the overhead computer. They are NEVER right after installing a "chip". Either that, or he's not too good with math. :-laf