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Old 02-21-2013, 04:24 AM   #28 (permalink)
EcoModding Lurker
Join Date: Jan 2013
Location: Oregon, US
Posts: 43

ZoomFreakingZoom - '88 Mazda RX7 Convertible
90 day: 19.02 mpg (US)

Geo - '96 Geo Prizm Base
90 day: 32.42 mpg (US)
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Originally Posted by t vago View Post
Maximum rated power would go down, but who cruises down the highway at wide-open throttle?

I've seen about a 5% improvement in FE from raising my truck's intake temperature 50 F above ambient.

How so?

More power means you can get up to speed faster with the same shift points.

5% is a good improvement, and worthwhile. I'm curious how much this mod helps with an already warm engine going down the highway - in other words, if you took the cold start out of the equation.
1988 rx7 convertible. Streetported, racing beat header and presilencer replacing all 3 catalytic converters. Atkins 6 port sleeves. K&N cone filter intake. 22mpg average, 27mpg max. Spreadsheet (updated regularly):
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