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Old 06-18-2011, 11:51 AM   #15 (permalink)
California98Civic
Cyborg ECU
 
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by Joenavy85 View Post
I don't think a HAI will help a vehicle with a MAF sensor
The MAF sensor seems not to work, judging from tests people have tried here. I run a WAI with my MAP sensor. I have tested fairly rigorously in an A-B-A format (see link in my signature for test results). I have seen temps as high as the 130s without knock. I saw a significant FE gain.

Quote:
Originally Posted by Joenavy85 View Post
Higher intake temp = less dense air charge = lower O2 content = less fuel injected = more throttle required for same amount of power = lower pumping and throttling losses = better efficiency. My Jeep starts to knock around 140*, my girlfriend's Focus starts to knock around 150-155* (at least that's when the knock sensor says it's knocking)
Joenavy85 does it again! I think he is completely correct on why a WAI works with a MAP sensor. The design I use gets warm air from above the exhaust manifold and catalytic converter. (Pictured in my avatar.)

Good luck!
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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