How to How to make a custom V6 Intake

About This How-to
Author: moonwell
Added: 06.05.01
Updated: 03.07.04
Discuss (43)
Why do I want to do an intake mod you ask? Well, more air to the engine equals more power. So the more free the airflow, the more power you will receive. The aluminumized tube privides a smoother and more direct flow than the stock hose which is textured on the inside. Couple this will a free flowing exhaust system to get rid of the exhaust gases quicker and you will have a drastic improvement over stock! You need a high performance exhaust such as magnaflow in order to take total advantage of your new intake.
You can expect to gain maybe 5 HP from just this setup, more if you redo your exhaust.


Parts

Tools

How To Do It

Step 1

First we will remove the old airbox. Undo the 3 clips that hold the top cover on the airbox and remove the air filter. Then Remove the clip that holds in the IAT sensor to the side of the box and remove it from the box. Next you need to use a socket wrench with a long extension to remove the bolt from the bottom of the airbox, and then the bolt on the side bracket.

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Step 2

Undo the hose clamp and remove the stock tube from the throttle body. As long as you have it off, you might as well clean the throttle body. Click here to learn how. Once you have the hose disconnected, the old airbox assembly can be removed from the vehicle.

warmairintake

Step 3

Use a socket wrench to remove the stock airbox mount bracket from the transmission mount. Put the bolts back in place once you have it off.

warmairintake

Step 4

Now you should decide what you want to do with the IAT sensor that you removed from the airbox. Be sure to plug it back in to the electrical connector or you will throw a code. You have a couple options as to what you can do with the IAT

  1. Wait and drill a hole in the new intake pipe and mount it in that hole using a grommet to make a tight seal. This is the best option, but it requires the drilling of another hole
  2. Mount it in a location near where the end of the cone filter will be, such as taped to the upper radiator hose. This way it will still sense the same temp air as the intake is sucking in. This is what I did with mine
  3. Extend the wires and mount it outside of the engine bay. Some people say this will increase performance since it will sense colder air, but I would not recommend doing it for several reasons.
    1. It will cause the cause the car to run rich, causing excessive carbon buildup in the intake system and exhaust
    2. The sensor could be damaged by the elements, since it will be more exposed.
    3. It can negatively effect your gas mileage
    4. It won't really give you a performance gain, and could actually cause a decrease in performance.

warmairintake

Step 5

Mark off the new tubing where to be cut. One end of the tube will be enlarged slightly. It needs to be cut about 2.5 inches from this end, and about 6.5 inches from the other. The pipe should be about 11" long after it is cut. Look at the picture if you are confused.

warmairintake

Step 6

Now get out the hacksaw and have at it. Take your time and be sure to get it cut straight. After you get both ends cut, use a metal file to smooth the edges of the cut.

warmairintake

Step 7

Drill a 5/8" hole in the top of the tube for the crankcase ventilation hose. The hole goes on the end without the flare on it. Once the hole is drilled, insert the rubber grommet into the hole to provide a tight seal with the tube.

If you don't want to drill a hole for the crankcase breather tube, you can install an aftermarket crankcase breather which is just a little filter that sits attaches to the valve cover, but the to the intake.

warmairintake

Step 8

Now is a good time to paint your intake pipe, or you can wait until you have completed assembly to be sure everything fits. I used a high temp ceramic based spray paint to provide added heat resistance and protection

Step 9

To assemble the intake, Insert the pipe coupling onto the end of the tube without the flare on the end and tighten the hose clamp partially. Now insert the filter onto the other end - the end with the flare and tighten down the hose clamp all the way. It will seem as if the filter is fitting lose, but it will tighten up snug.

warmairintake

Step 10

Hook the end with the coupling up to the throttle body. The throttle body is slightly oval shaped, and the intake is round, but it will all hook up. Tighten both hose clamps down as tight as they will go. You shouldn't need any more support for the intake as long as the clamps are all tight. It will rest on the lower stock airbox mount.

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Step 11

Now that you have verified that everything fits, if you havn't already painted the tube, you should remove the coupling and filter and paint the pipe now. The paint will help to keep the inside of the pipe cooler and you want to keep it as cool as possible, because cooler air = denser air = more air = more power! You can paint it with any high temp engine paint that has a ceramic in it. Be sure to prime the tube first and use quite a few thin coats of paint.

warmairintake

Step 12

Fire the engine up, stomp on the gas and listen to the engine purr and the exhaust rumble. You should be able to hear the air being sucked into the intake. It is a great sound. The addition of this intake will also make you exhaust sounds a bit beefier too. Click here for some more pictures.

warmairintake
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