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Old 11-27-2022, 07:39 PM   #35 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 2,094

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by ConnClark View Post
Other than faster engine warmup WAI are a waste of time for fuel savings. They just increase energy lost to the cooling system and increase polution.

Ram air on a gasoline engine are of no use for fuel savings. They can provide a small bump in power though. On a diesel they will provide a benefit in both power and performance.

At sealevel 70 degrees F and 70mph you can get a theoretical maximum of 0.09 psi of boost.

Ram Air Calculator
According to that Ram Calculator I'd have to go more than 400mph to make up for the lost air density at my altitudes...
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