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Installing an AEM Intake in a WK Grand Cherokee! PDF Print E-mail
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Friday, 08 September 2006

On common and easy to perform upgrade to squeeze more power out of a vehicle is to install a cold air intake. These intakes are generally less restrictive and often allow colder air into the engine. Follow along as we install a kit from AEM, The first impressions of the box and packaging was impressive, the package arrived promptly and in good shape. The box was a little large for the pieces in it. But otherwise it was exactly what was expected.

Step One Removing Old intake

Start by removing the engine cover held in place via the oil filler cap. Remember to replace the oil cap as you don't want anything to fall in there when installing the intake. Next locate the clamp on the throttle body and the clamp on the air box, loosen these. Now one thing the instructions don't mention is the bolt holding the intake box on that is next to the throttle body.


Once the bolt and clamps are loosened rotate the plastic intake upwards to show the IAT sensor. You will need to reuse the sensor so for the time being unplug the wire from the sensor and leave the sensor in the plastic intake. After unplugging the sensor pull off the hoses, one connects to the air box and the other to the intake manifold. You won't need these hoses anymore. Set the intake aside you won't need it anymore.


Now we move onto removing the air box and inlet tube. To remove these you need to pull the front grill. The front grill is held on with black plastic plugs. You pop the center piece up then pull the whole plug, the grill folds forward and out. Set the grill aside so it doesn't get damaged. After removing the grill locate the inlet tube that runs from the front to the air box, it is just pressed into the air box so just pull it out.


(Shown here with the white arrows)


The air box is attached via two points one on the bottom that is just a plug and a bolt that is on the rear part squished in-between the coolant tank and the box. To reach the bolt you may need to remove the coolant tank that is held in place with a single 8mm bolt. The air box is held in place with a 10mm bolt on the rear and a rubber plug on the bottom. Once the bolt on the rear is removed and the inlet tube on the front, gently pull upwards to release the suction from the plug on the bottom.

Step Two Preparing heat shield

To install the heat shield we need to locate and loosen the two center support brackets for the hood latch. Next locate and remove the two 10mm bolts on the passenger side of the hood latch support we will reuse these. Next gather the supplied hardware used to attach the shield to the mount assemble this via the picture instructions.


To install the heat shield place the bottom hole over the mount with the bolt in it and slide the two open holes in place with the hood latch support bolts that we had removed earlier. The heat shield also lines up with the forward most coolant tank mount. The coolant tank stock uses a plastic plug over this bolt discard this plastic nut we will be using a supplied nut to reattach. Replace the two hood latch support bolts through the heat shield holes.


Next we need to install the mount for the intake tube to the heat shield it is a rubber looking thing with a set of nuts coming out each side remove the nuts from the heat shield side and slide into the a slotted holes. Loosen the intake tube side don't remove the nut so that the tube can slide down over the bolt

At this point locate the gasket for the heat shield and press it down onto the top rear for a tight fit.


Preparing AEM Brute Force Intake Tube

Locate the rubber coupler that is used to hold the tube to the throttle body place this over the throttle body adding the supplied hose clamps on. You will need two for the throttle body side of the intake. Tighten the throttle body clamp down to secure the coupler. Next we need to install the grommet for the IAT sensor to be replaced. This is just worked into the opening on the intake tube. Now we need to get the IAT sensor from the old air intake it just twists out easily. Be careful not to touch any of the wires on the sensor. The sensor needs to be pressed into the rubber grommet this can prove to be difficult as it was an extremely tight fit.

Next locate the air filter and place a hose clamp over the open end to prepare for install onto the intake tube. Place the filter on to the tube and tighten the clamp down be sure the tube is on far enough so it can't slip off. With the filter attached slide the tube into the throttle body and place it over the mount that is attached to the heat shield. Tighten down the clamp on the throttle body and the mount attached to the heat shield.

Connecting Breather Hose

Using the supplied breather hose wrap, wrap the protective plastic piece around the hose on one end roughly two or three inches from the end. Connect the end with the plastic wrap to the intake manifold and loop it close to the oil dipstick to clear the engine cover. Connect the other end to the intake tube.


At this time locate the wires for the IAT sensor and plug those in. also check all bolts for a tight fitment and rubbing issues with the intake tube and the heat shield.

Reinstall the grill with the black plastic plugs and if you want but isn't required replace the engine cover. I opted to replace it as it covers the wires nicely


My first impression of driving the jeep after the tube was installed was amazing it reacted so much different it was a day and night. I have since noticed a slight increase in Mpg's about 2mpg to 3mpg better. I get comments all the time about the sound and the feel that comes from just this simple modification. I do recommend this to everyone.

For more information or to order your own system click on the link below:


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