Felt tube inside the air filter box

[Camper]

Here is the information for the another dodge forum:

http://www.200forums.com/forum/10-chrysler-200-engine-technical-discussion/2753-air-cleaner-box-felt-tube.html

Because the air must first travel through this system before it reaches the carburetor or throttle body, the overall size and shape of the system has a profound effect on air flow. Air, like water, does not like to turn corners nor does it react favorably when confronted by an obstruction such as a sharp bend in a hose or a baffle. In many cases, the air box and/or the hoses and duct work used to create the air filtration system is just as restrictive as the original paper filter element. In some extreme cases, the air box and/or the air delivery system is the greatest source of restriction. The inlet to the air box is a good example. In many instances this opening is one half the cross sectional area of the throttle body or carburetor opening. It would be like trying to run a marathon while breathing through a soda straw.

Since an engine is a glorified air pump, much of its efficiency is based on how easily air can get into and out of the cylinder. Restrictions to this inward and outward flow are called pumping losses. Obviously, the least amount of obstruction will reduce the pumping losses to a minimum, freeing up more power to the wheels.

Read more: http://www.modified.com/tech/9912scc_intake_exhaust_systems/#ixzz2rPlT9Ch7

[jkeaton]

Here is the information for the another dodge forum:

http://www.200forums.com/forum/10-chrysler-200-engine-technical-discussion/2753-air-cleaner-box-felt-tube.html

Because the air must first travel through this system before it reaches the carburetor or throttle body, the overall size and shape of the system has a profound effect on air flow. Air, like water, does not like to turn corners nor does it react favorably when confronted by an obstruction such as a sharp bend in a hose or a baffle. In many cases, the air box and/or the hoses and duct work used to create the air filtration system is just as restrictive as the original paper filter element. In some extreme cases, the air box and/or the air delivery system is the greatest source of restriction. The inlet to the air box is a good example. In many instances this opening is one half the cross sectional area of the throttle body or carburetor opening. It would be like trying to run a marathon while breathing through a soda straw.

Since an engine is a glorified air pump, much of its efficiency is based on how easily air can get into and out of the cylinder. Restrictions to this inward and outward flow are called pumping losses. Obviously, the least amount of obstruction will reduce the pumping losses to a minimum, freeing up more power to the wheels.

Read more: http://www.modified.com/tech/9912scc_intake_exhaust_systems/#ixzz2rPlT9Ch7

Agreed. But what we are saying is, that unless you modify the intake, heads and exhaust, all that extra air does nothing cause it has no where to go. An engine IS just a big air pump, but without modifying the air outlet, bringing more air to the inlet wont do any good. I'm done with this as well. It's your car.

Edited January 25, 2014 by jkeaton

[Camper]

That is correct. But the question is: inside the air cleaner box attached to the snorkel tube is a heavy felt tube about 5" long. What is its purpose?

So if it just for the noise damper, than it create some air resistance and therefore can be removed, without any issue, and it will help to engine a breath little bit easy. Also if change the paper air filter to better quality air filter (K&N) it will help also.

[Camper]

The Intake System
The intake system's job is to take outside air, clean it, and bring it to the engine so it can be mixed with fuel and burned. Sounds like a simple job, but there is usually power lurking here for the weekend tuner to unleash. As we stated before, the engine is mostly a giant air pump. The easier for air to be sucked in, the less power the engine will have to waste getting the air inside.

Air Filters
For many, a first step is to replace the sometimes restrictive factory paper filter element with a high-flowing one. K&N makes OEM replacement, high flow air filters for just about every car on earth. The K&N filter uses an oil-saturated gauze filter element that can flow up to 100 percent more than the stock paper element. The K&N filter is also very durable and can be washed and reused many times. This makes a K&N a good money-saving addition to a car. Usually a drop in-filter gives from 0 to 2 additional hp.

A limitation of the drop-in filter is tuners are restricted in filter area to whatever the vehicle's manufacturer originally designed. If the car was designed with a tiny air filter, a high-flow drop-in will be tiny. If the car has a restrictive airbox, you are also stuck with that if simply using a drop-in.

Cone Style Open Air Filters
In the search to make modern cars more and more quiet, some manufactures have been adding silencers to the air intake of their airboxes. This can sometimes make the air intake quite restrictive. As most enthusiast drivers feel intake noise is music to our ears, we do not mind adding more of it to our car's mechanical symphony. In that case, there are many companies that make cone-type air filters. These filters are racing-type, cone-shaped air filter elements that have a large surface area for a filtering medium. The more surface area, the less restriction to the incoming airflow a filter will have.

Cone filters typically have an adapter bolting directly to the car's intake pipe or airflow meter replacing the stock air filter and air box. The best adapters have a radiused inlet to help smooth the airflow into the intake tube. These cone filters typically make from 2 to 5 more hp and are much more noisy than stock.

Air Intake Systems
Finally, there are air intake systems, ram air systems and cold air intake systems. Most air intake systems use a long mandrel-bent pipe to replace most car's restrictive stock convoluted rubber pipe. The best of these systems consider the tuned length of the pipe and take advantage of the incoming pulses to get a ram effect, kind of like headers, but in reverse. Most of these intakes range from 2.25 inches to 3 inches in diameter with lengths from 12 to 30 inches in length.

Some of these systems can be plumbed to the front of the car with a scoop to take advantage of high-pressure air bombarding the front of the car in an effort to help ram more air into the engine. A true effective ram air system can give a 1- to 3-percent power boost over a conventional tuned air intake. Air intake systems can be plumbed outside of the engine compartment to take advantage of cold air, unheated from the engine, radiator or A/C condenser. A rule of thumb is that for every 10 degrees you can make an engine's intake air cooler, you can get 1 percent more power. The colder the intake air is, the denser it is and the more oxygen it contains, this is where the additional power comes from. These systems can produce from 4 to 15 more wheel hp depending on how they were designed and what speed the power was measured at (in the case of ram air).

A properly designed system can use the reduction of restriction, tuned length, ram air and cold air to get tremendous increases in power. A good free-flowing air intake can also free up some gas mileage by providing the car with cooler, denser air and reducing pumping losses.

As a warning: Many cold air and ram air set-ups can also scoop up water during a rain storm which can possibly damage your engine. Look at the designs carefully to see if they can pick up water. Many cold air intakes have a removable section so the air filter can quickly be mounted higher in case of rain.

Read more: http://www.modified.com/tech/9912scc_intake_exhaust_systems/#ixzz2rPsoh7r3

[Journey_SeXT]

That is correct. But the question is: inside the air cleaner box attached to the snorkel tube is a heavy felt tube about 5" long. What is its purpose?

So if it just for the noise damper, than it create some air resistance and therefore can be removed, without any issue, and it will help to engine a breath little bit easy. Also if change the paper air filter to better quality air filter (K&N) it will help also.

Better air filter than factory paper??? Are you sure the K&N's traps more dirt because most news articles don't seem to support this unless you are reading it from the K&N website or its dealers.

http://www.nicoclub.com/archives/kn-vs-oem-filter.html

[Camper]

This is controversial, every company is claim that the filter they produce is much better then another one.

I do not say the K&N is trap more dirt, as I say is less restricted to air flow. I just simple ask if I can remove felt tube to increase the air flow?

[jkeaton]

This is controversial, every company is claim that the filter they produce is much better then another one.

I do not say the K&N is trap more dirt, as I say is less restricted to air flow. I just simple ask if I can remove felt tube to increase the air flow

It's your car. Do with it what you will. You don't need anyone's permission.

Edited January 25, 2014 by jkeaton

[Camper]

I know,that is my car.I just simple asking opinion on the forum.The more opinion is always better to get proper conclusion.

[Mcgusto82]

Like someone else had offered, take it off, drive it around for a while, if it drives better, or you get better mpg's keep it off. Otherwise put it back on.

Personally, I don't think this will help any. Today, MPG means more than HP, and chrysler wouldn't have put a little noise suppression at the expense of even 1 MPG.