Quote:
Originally Posted by hayden55
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.
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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