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K&N FIPK Installation

K&N FIPK Installation
On the left is the stock TJ 4.0L setup. Notice several things. First, there is a double bend at the throttle body (top, right) and at the intake "trumpet" (bottom, left) there is a small-diameter opening and another bend. Can you say restrictive air-flow?
K&N FIPK Installation
Here is a completed K&N FIPK setup. Notice that the intake tube is about as straight as can be. All bends are subtle angles to eliminate bottle-necking of the air-flow. Then, of course, the open air filter on the end means air, air, air!
     
K&N FIPK Installation
The K&N FIPK kit comes with everything you need including the tube, filter, hardware, baffle, weather stripping, adapter, and even a recharge kit.
K&N FIPK Installation
Regardless of what setup you have, the first step is to remove everything up to the throttle body. While you're at it, clean that throttle body!
   
The biggest difference between our own modification and K&N's FIPK is placement of the air filter. For a motor to perform best, you want cooler air at the throttle body. Our modification does, in fact, feed more air to the throttle body, but because the filter is sitting where it is, it is sucking hot air. The FIPK relocates the air filter up front, behind the headlight, where the original air filter box was. Why do you think Jeep put it there in the first place? In addition to the placement of the filter, the FIPK uses a baffle that acts as a heat shield. This is a very important difference and is worth the price of admission, because you now have clean, cool(er) air coming in. Stay tuned!
K&N FIPK Installation
You have to put weather stripping on the baffle yourself.
K&N FIPK Installation
Yes, it really does take a bit of strength and dexterity to bend it. It has metal inside.
      
K&N FIPK Installation
Have a strong cutting implement handy. The only way you'll get around some of the corners is to cut the metal and then slide the stripping in place.
K&N FIPK Installation
Now complete, the baffle is good to go. It was a lot of work but the weather stripping is now installed.
     
K&N FIPK Installation
The baffle attaches on top of the fender flare and also to the mounting flange on the radiator. You have to assemble a simple bracket prior to installation.
K&N FIPK Installation
The first mounting position, on top of the fender, is quite simple and uses a stock hole, so no drilling is required. (View from underneath)
     
K&N FIPK Installation
The top view of the fender mount shows that it's basically a shock-absorbing bushing.
K&N FIPK Installation
The second mounting attachment goes to the radiator and also uses an existing hole.

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