2003 Kenworth, w/cm570, crate engine in 2016

[Irishflyer97]

(12-09-2019 )Signature620 Wrote:  What work will it be doing? If it's heavy stuff then you won't see much of an economy gain with an 871. The 570 is a very reliable and powerful engine.

Grain hopper, pulling 86k-90k. Flat ground for the most part.

[Irishflyer97]

How would one go about a proper de-mandate? If I'm pulling heavy most of the time, would I gain that much mpg vs a non VGT? Thanks everyone for the input, getting a good education.