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Old 01-05-2023, 08:56 PM   #16 (permalink)
hayden55
Master EcoModder
 
Join Date: Dec 2010
Location: USA
Posts: 1,171

Sport Utility Prius - '10 Toyota Prius II
90 day: 52.98 mpg (US)

300k Sequoia 4WD - '01 Toyota Sequoia Limited 4wd
90 day: 20.19 mpg (US)
Thanks: 352
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i see a metal exhaust pipe so its a 78% efficient unit. Hmmm.... i don't see dampers. Keep taking pictures of the ducts until we see something like a wingnut or a handle sticking off the side.

Also, i forgot to mention if you don't care about looks you can take the registers off the vents on the down stairs and it will have a similar effect.
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