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Old 06-07-2021, 04:21 PM   #68 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)

Oxygen Blue - '00 Honda Insight
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Quote:
Originally Posted by Xist View Post
How long ago should someone have used compressed air to blow out the filter?
Not looking to find out!

The backside of the filler looked new. And, if anything, a dirty filter might actually improve economy. It might chop off the top couple of percent of engine load, which tend to be less efficient.

On a related note, the air intake, runner and plenum sizes are pretty comical to me. Anyone know if a smaller volume plenum like Honda used leads to higher efficiency? I could see some possible gains from a lower volume to create vacuum in.
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