Anyone Run a WAI (warm Air Intake) to Increase MPG - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
All about MPG All about maximizing your Miles Per Gallon (MPG)

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post #1 of 24 (permalink) Old 02-02-2014, 02:46 PM Thread Starter
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Anyone Run a WAI (warm Air Intake) to Increase MPG

Has anyone tried it, was there any gain?
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post #2 of 24 (permalink) Old 02-02-2014, 04:35 PM
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I would think cold air would be better for MPG... when I installed my AEM my avg MPG went up 2 and then another 2 when I went to the ss downpipe and catback... how would you do a warn air intake anyway?

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post #3 of 24 (permalink) Old 02-02-2014, 04:43 PM
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You take a hose and attach it by the manifold so it gets warm air. Older v8's did this to make it easier to start and stay running in the cold.

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post #4 of 24 (permalink) Old 02-03-2014, 06:35 AM
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Yeah, my old 3.8 had that. It looks like an oversized straw wrapped in tin foil that comes from the block and feeds the carburetor.

I can't imagine a WAI extending your mpg's. Cold air is packed denser with more oxygen atoms then ambient or warm air. Those atoms will burn more efficiently and release more energy, meaning your motor will develop more power for the same amount of effort. If the motor doesn't have to work as hard, it won't use as much fuel. I'm no chemist, but it sounds like a winning formula to me.

Then again, maybe I've been brainwashed by K&N, Injen, and all those other thieves lol

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post #5 of 24 (permalink) Old 02-03-2014, 08:23 AM
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Colder air requires more fuel. Warmer air doesn't. Hence higher mpgs

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post #6 of 24 (permalink) Old 02-03-2014, 10:28 AM
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Ya don't say. Can we get Bill Nye to comment?

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post #7 of 24 (permalink) Old 02-03-2014, 10:34 AM
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Only problem with running a warm air intake is possibly going into detonation out of range of the preset values and might need to run a higher octane gasoline. But if you could regulate the temperature somehow to keep it right below detonation you would increase your mpg.

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post #8 of 24 (permalink) Old 02-03-2014, 10:53 AM
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You could always use a solenoid and a thermometer. Just have to keep an eye on it, flip a switch to turn it off.
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post #9 of 24 (permalink) Old 02-03-2014, 11:14 AM
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So by that logic, a CAI would have the opposite effect on fuel economy?

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post #10 of 24 (permalink) Old 02-03-2014, 11:44 AM
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Quote:
Originally Posted by Plain Jane View Post
So by that logic, a CAI would have the opposite effect on fuel economy?
Yup, CAI sucks in colder air hence the boost (lol) in hp

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