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Old 01-03-2018, 04:22 PM   #1 (permalink)
EcoModding Apprentice
 
Join Date: Dec 2010
Location: arkansas
Posts: 221

"Proper Shitbox" (SOLD) - '96 Honda Civic LX fully optioned no weight reduction
90 day: 41.9 mpg (US)

Plue Brius - '10 Toyota Prius II
90 day: 49.3 mpg (US)
Thanks: 80
Thanked 28 Times in 22 Posts
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?

__________________
2010 Prius. 36W low beams. 185 LRR tires. Aero wheel covers. CR 70 windshield. CR 40 side window. Passenger mirror & wiper delete. Antenna stick removed. Rear wiper & Squirter delete. 50lb weight reduction. 2" hitch.

Last edited by hayden55; 01-03-2018 at 04:45 PM..
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Old 01-03-2018, 04:26 PM   #2 (permalink)
EcoModding Apprentice
 
Join Date: Dec 2010
Location: arkansas
Posts: 221

"Proper Shitbox" (SOLD) - '96 Honda Civic LX fully optioned no weight reduction
90 day: 41.9 mpg (US)

Plue Brius - '10 Toyota Prius II
90 day: 49.3 mpg (US)
Thanks: 80
Thanked 28 Times in 22 Posts
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.

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.

__________________
2010 Prius. 36W low beams. 185 LRR tires. Aero wheel covers. CR 70 windshield. CR 40 side window. Passenger mirror & wiper delete. Antenna stick removed. Rear wiper & Squirter delete. 50lb weight reduction. 2" hitch.

Last edited by hayden55; 01-03-2018 at 05:19 PM..
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