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Old 02-20-2013, 11:04 PM   #16 (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)
Thanks: 2
Thanked 2 Times in 2 Posts
I don't quite get this mod.

Warmer air is less dense, I get that. Therefore the car would run leaner if it thought there was mroe air coming into the engine than expected based off the air flow meter. However, if I'm not mistaken, most cars have BOTH an air flow meter and an intake air temperature sensor that sends information to the ECU. So, if that were the case for this specific car, I don't see how this would help since the ECU would just correct accordingly and inject less fuel anyways.

Optimally you would want cold air going into the engine(to an extent) and the ECU to know how cold it is and how much there is to inject the correct amount of fuel.

Is there something I'm missing?
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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