Quote:
Originally Posted by redneck
I run my exhaust heated intake year round. The hotter the air the better. Your computer will pull the fuel back to the correct air fuel ratio. Cooler air contains more oxygen thus more fuel will be needed to keep the correct ratio.
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This is not necessarily true; current eco-cars use cool, high pressure intake air routed from in front of the radiator (Honda Insight, Toyota Prius, etc.).
After seeing these intakes at the Chicago Auto Show, I decided to try ducting my intake to the front of the car in 2020:
I verified that intake air temperature had been reduced by monitoring it on the Scangauge.
Statistical analysis (hypothesis testing--compares sample data to the normal distribution to determine if there is enough evidence to claim a population parameter has changed) of the fuel consumption for the 6 months previous (Jan-June) compared to the 6 months after (July-Dec) showed that consumption had been reduced, from an average 4.49 L/100 km to 4.09 L/100 km.