Thread: WAI or RAI
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Old 08-21-2018, 05:59 PM   #7 (permalink)
chumly
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Join Date: May 2012
Location: Evansville Ill.
Posts: 101

sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
90 day: 26.78 mpg (US)

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Quote:
Originally Posted by hayden55 View Post
WAI only really help to warm the car up faster and get you out of enrichment or high idle mode. Past that unless you eoc a lot and need to keep the engine hot because it isn't running long enough to stay warm they really don't give you magic fuel economy numbers on steady-state cruising.
For example my Prius functions as a Prius above 170 degrees coolant temp, but below that the engine won't hardly shut off and it uses a lot higher gpm for accel and idle.
I disagree, on my smart the mpg's are higher when cruising at higher temps but the power drops off, when I hook up the cai the power comes back but the mpg goes down a bit according to my scangage. Chumly
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