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Old 05-21-2013, 08:01 PM   #11
Cruisin
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I understand the Newmission mod and the comparison to the snorkel-delete; I've dyno-tested both. I even created a fiberglass scoop and used aircraft ducting (the radiator hose is better, imho). I actually have my Newmission'ed box for sale in the BST area, which led to some pictures and discussion of my scoop.

The 'vacuum bottle' is the OEM resonator. It is designed to act as a shock absorber for the air box. It absorbs the excess energy in air pulsations to reduce resonance, which is noticed with its removal. If you were trying to remove 'annoying sound', then reinstalling it should have been the first step.

What I was alluding to in my other post is that the snorkel has no bearing on NVH. It does, however, restrict air flowing into the runners. The purpose of it's removal is not to make it a 'ram air' intake; it is removed for the sake of allowing the air an easier, unrestricted path into the runners. If you were wanting to turn it into a 'ram air' setup, you would have to fabricate a scoop that was a larger diameter than the opening in the radiator support for the runners.

Your mention of the throttle body is correct to a small degree, but make sure that you pay attention to the fact that your MAF sensor is significantly larger. Do some research into Bernoulli's Principle for a better understanding of why. That should give you a little better understanding.

You are on the correct path for testing, and I'm glad that what you have is working for you. Different peoples' commutes result in different numbers in reference to MPG's and mods. I did as much dyno work as I could to prove/disprove the 'cheap' mods, but unfortunately power numbers do not have a direct relation to mileage. What works for some based on their circumstances doesn't work for others. The only thing that's practically guaranteed on everyone's car when it comes to cheap mods is the snorkel delete/drop-in filter.
I stand corrected on the purpose of the small vacuum vessel at the bottom of the air box. Replacing it would not accomplish anything with the Newmission mod. which I want to keep.

I do now wonder what's the purpose of the intake snorkel? Do the jet-like holes act as venturi-- or is the thing just some glorified plumbing? Ford went to a lot of trouble designing it.

Afraid I see no connection to Bernoulli's Principal in what I was talking about. To my way of thinking the amount of air entering the intake will be the same if the air supplied does not create vacuum inside the air box. The only restriction being the air filter itself, which replacing with the K & N helps somewhat. I didn't mean to reference the relationship between air velocity/ air pressure/orifice size.

Replacing the snorkel tube (the part with the holes) did seem to quiet the engine to me. And my MPGs continue to rise. Of course washing the car makes it go faster!
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Old 05-22-2013, 12:31 PM   #12
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The short answer is no. The only benefit you'll get by running with the lid off is a warmer intake charge. At the very least you'll need to replace your filter with an aftermarket drop-in.

Plus the noise it makes is horrible!
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Old 05-28-2013, 06:06 PM   #13
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Honestly, for budget gains you should remove your snorkel and replace your filter with an aftermarket drop-in. For <$50 you get the majority of the power afforded by the more expensive systems and you don't sacrifice power down low to get it. For a little sound, remove your resonator and seal the opening with a piece of metal and some silicone. Its nothing like the lid off...
Which resonator?
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Old 05-28-2013, 07:05 PM   #14
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Which resonator?
There's only one resonator, and it's directly below the box and held onto the frame with a bolt iirc. I don't have a pic to show, but when you take your filter out and look under it you'll see a tube in the bottom of the box. That's the resonator.
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Old 05-28-2013, 07:08 PM   #15
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There's only one resonator, and it's directly below the box and held onto the frame with a bolt iirc. I don't have a pic to show, but when you take your filter out and look under it you'll see a tube in the bottom of the box. That's the resonator.
Is the whole tube a resonator? isnt that a RAm air inlet also? or does it have a baffle in it? Or just remove it completely?
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Old 05-28-2013, 07:09 PM   #16
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Is the whole tube a resonator? isnt that a RAm air inlet also? or does it have a baffle in it? Or just remove it completely?
No-under the box. Not the two tubes that come from the radiator support.
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Old 05-28-2013, 07:11 PM   #17
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I am with you on that, but isn't that a ram air setup also? Or is it just a closed pipe to dampen sound? I was under the impression of that being another air inlet
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Old 05-28-2013, 07:19 PM   #18
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I am with you on that, but isn't that a ram air setup also? Or is it just a closed pipe to dampen sound? I was under the impression of that being another air inlet
Nope, it's completely closed minus that opening.
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Old 05-28-2013, 07:22 PM   #19
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Alright, be right back, going to play for a minute. How do you uploads pictures via iPhone?
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Old 05-29-2013, 06:59 AM   #20
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Put them on photobucket or some site like that. Then use the [img][/img] brackets.
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