A&RR MPG Calc for 07 Tahoe
 

Alright my friend is looking for a toy hauler so we were trying to find something that got decent mpg, could haul 8 people, and a boat if needed. Now where trying to fill out the Calc:
Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com
Given: http://media.caranddriver.com/files/...-ltz-specs.pdf
And we are starting to realize the Tahoe must be super efficient to be a long tail model and get the mpg its rated for.
And it really does it has cylinder deact. and it functions pretty well. Sometimes I've seen people avg 22-25 mpg on the free way unloaded.
Given:
Vehicle Weight: 5840
Cd:0.36
A:37.3
Tire: 275/55-20 @ 35 psi
old EPA: 16/22
new EPA:14/20
So what values do you think we need for:
CRR?
Eng Eff:
Dt Eff:
Load:
What is the mpg highway peak and average speed for their test?

We've talked about:
Lean tune the local guys do to pick up 1-2mpg.
Energy saver a/s tires with lighter wheels (~150 pounds lighter for a set with correct load cap as well o.o)
Meziere EWP (100% reduc of mech water pump).
UDP (25% reduc on pump, compressor, and generator).
Smooth out body (racks, rails, etc... only need to tow).
3.08 or 2.73 gears
If the new tahoes can squeak out 22-24 mpg around 65(?) mph from (w EPAS and aero with the 6 speed) the factory it seems like this could as well with appropriate load, rolling resistance, and drag reduction which seems pretty straight forward.
https://www.youtube.com/watch?v=dxAQmj3P8xs&t=497s
This video talks about the v4 mode with the 6.2 Escalade and how it gets 23-26 mpg at 65 mph with 87 and 93.