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Old 07-19-2021, 12:36 AM   #99 (permalink)
MakitaDiesel
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Join Date: Aug 2012
Location: Winston Salem, NC
Posts: 38

Thunder - '85 Honda CRX Si
90 day: 44.84 mpg (US)

Lightning - '89 Honda CRX HF
Last 3: 46.25 mpg (US)

The Darkness - '97 Honda Civic DX
90 day: 41.84 mpg (US)
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Quote:
Originally Posted by Ecky View Post
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.
I wondered the same thing back when swapping the original D15B6 out of the CRX for a D15Z1. Both had intake tubes that would choke on a golf ball. B6 = 62hp, Z1 = 92hp.
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