Custom Cold Forced Air Intake

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Sep 21, 2003 | 03:31 PM

BigTomMiller

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Joined: Feb 2003

Posts: 39

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From: Millbury USA

Custom Cold Forced Air Intake

I am currently working on installing my very own custom forced cold air intake on my 1992 aerostar 4.0l... I am cutting a hole in the bottom of my airbox to goto square 3x3in gutter hose to go down past where the horn used to be to aluminum dryer hose that runs down to a cutout in the mudflap that is hooked to the bumper. I didnt do any other modifications to the airbox, filter, mass airflow sensor, or anything else in the intake etc..
I want to know if what i did will work since it is different from other cold air intakes because its a hose that connects to the airbox replacing the old 2in diameter air intake on the airbox. So will it work? How much a horsepower gain will I get from this? Am I doing anything I shouldnt do? And is it a good idea

Thank you all for your time

Sep 21, 2003 | 08:06 PM

Aerodude

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Joined: Mar 2003

Posts: 276

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From: Forest Hill

Custom Cold Forced Air Intake

try it and see what happens. I drilled 3- 2.5" holes in my air box and it seemed to help low end power but was very noisy. Any extra air you can get should help.

Oct 12, 2003 | 12:43 AM

xlt4wd90

Lead Driver

Joined: Sep 2003

Posts: 7,018

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From: SoCal

Enlarging the openning to the air box will help up to a certain point. The MAF sensor would be the next choke point after the stock openning. Next would be the throttle, which has that plate and pivot rod in it, even though I think the throttle bore is bigger than that of the MAF sensor.

The Mustangers who have installed "ram" air ducting have found little to no power increases that can be repeatably measured. Given the size of the opennings of most of these ducts, you will find that you will need to be travelling pretty fast to get any significant ramming effect. However, some of them did suffer definite engine damage when they drove through water and their ram inlets sucked in enough liquid to hydrolock the cylinders.

So, do be careful where you place the openning of your ram duct.

eugene

Oct 12, 2003 | 01:12 AM

scott9050

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Joined: May 2002

Posts: 167

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I have a March Ram air setup on my Mustang and the best benefits from it is the cold charge of air. Expect to change air filters often as all debris you run through will be sucked up into the filter.