Status update:

With several thousand miles on the clock, hand calculated mpg, I have an overall 2 MPG increase. This is not baby it, normal driving habits and nothing less than 70 on the highways and EGR plugged in. The highway miles is not flat, lots of grades, winding, traffic, etc. The last trip included some 4x4 time, which is included in the mileage calculation.

So my overall mileage (non towing) was holding steady (including 4x4 at ranches) at 13.3 and now holding steady at 15.4 (stock tires at 65psi) .... No tuner in place either.

Hope that helps. I got what I was after

Cheers.

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