View Single Post
Old 02-20-2010, 02:12 PM   #81 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Quote:
Originally Posted by bondo View Post
My fuel efficiency numbers always tank in cold temperatures. The air is just denser and any aero modification is not as effective.
This notion seems to come up frequently, and I want to make sure it's not misinterpreted.

Aero mods on their own aren't less effective in cold weather.

But the overall efficiency of the truck as a collection of systems is reduced in cold weather.

So if one were to methodologically test a particular aero mod in cold vs. warm weather (A-B-A as controlled as possible on the road, or in a lab), you would see a similar result in both temperature scenarios.

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 3 Users Say Thank You to MetroMPG For This Useful Post:
aerohead (02-20-2010), bondo (02-20-2010), mjboks (02-21-2010)