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Old 10-12-2016
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Functional hood scoop mod?

Hey guys, i am thinking about adding a dual functional air intake hood scoop. I know that i would have to get a hood scoops with an air filters and do the "plumbing" to the throttle body, but would the air forced in the hood scoops act like a turbo and increase my engine performance, not nearly as much as a real turbo but could i expect this?

Or would hood vents be better?

Last edited by lego4x4; 10-12-2016 at 09:33 AM.
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Old 10-12-2016
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Basically your making a ram air hood. Will it help? Sure a little but so little you wouldnt notice much of anything.

You also have to deal with rain water getting into the intake system when driving in the rain.

Wayne
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Old 10-12-2016
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How would i prevent water from getting in it? Im sure ther is some way, any ideas?
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Old 10-12-2016
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Didn't Ford already move the air filter box down near the grill to have the "ram" air affect ?
Maybe if the air filter box opening was made bigger to allow more air in ???
Using the original air box would solve you rain problem.
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Old 10-12-2016
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in my 2002 ford ranger it is located behind the right headlight and the opening is about the sice of a baseball.
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Old 10-12-2016
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No, it would have no effect on performance if stock system is in good working order.

It is a visual effect only.

In the old carb days a hood scoop could be used for a Cold Air Intake(CAI) but when vehicle makers went to fuel injection they also added CAI, and in a better spot, lower down in Rad support, cooler air than above hood.
Ram Air on carbs was actually bad unless you did some redesigning, a carb works on engine vacuum pulling out fuel from the jets, if you force air in you reduce the vacuum pulling in the fuel.

Good read here on "scoops": An Explanation of Hood Scoops - Ate Up With Motor

A supercharger sticking out of the hood is another story, lol, that's part of the engine, not part of the hood
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Old 10-12-2016
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The question is, how fast would one have to go to force air into the engine above atmospheric pressure of 14.7 pounds per square inch ?

In theory if you were to gain one pound more wouldn't the MAF sensor detect that and have the computer hold the injectors open a little longer ?

Or is it based solely on volume and not pressure ?
The volume being measured by the TPS ???
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Old 10-12-2016
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i think its all about air pressure, because the more volume there is the more pressure,
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