Installing an Injen Cold Air Intake on 2018 JLUR

Tech Tim

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We’ve seen a ton of aftermarket parts start popping up all over for the new Jeep JL/JLUs and it was only a matter of time before Cold Air Intake Kits started arriving. The first one we had a chance to install was the Air Intake System from Injen (pn#INJPF5005WB).

Featuring a one-piece roto-molded housing, a mandrel bent aluminum intake tube and an air filter with what Injen calls SuperNano-Web technology, this cold air kit is a good looking unit that claims to increase the power of your 3.6 V-6 equipped JL/JLU Wrangler by 9 H.P. and 11 lbs-ft torque.

What is SuperNano-Web Technology?
The Injen SuperNano-Web technology is super small fibers that create a very fine web like structure across the face of the filter media to help catch and contain the smallest of particles and keep them on the surface of the filter for easier cleaning and low restriction.




What you need:
Injen Air Intake System w/ SuperNano filter, Wrinkle Black finish, JL (pn# INJPF5005WB)

If you want something with some shine to it:
Injen Air Intake System w/ SuperNano filter, Polished Intake Tube, JL (pn# INJPF5005P.




Benefits of the Injen Air Intake System:
• Injen claims gains of up to 9 hp and 11 Ft. Lbs. of Torque
• Aggressive intake tone under acceleration
• Stainless steel band clamps with inner protective liner
• Designed to work with stock calibration
• SuperNano-Web Dry air filter requires no oil
• PowerFlow Box helps to keep unwanted hot air from entering the air filter
• Mandrel Bent 6061-T6 aluminum induction tube
• Durable Roto-Molded Polyethylene housing


Ease of Install:
We give this a 1 wrench rating on the 1-5 wrench rating system.
It was very easy to install, with only a few tools needed to do the job.

Installing the Injen Cold Air Intake:
Overview.jpg


Start out by familiarizing yourself with the OE intake components and their location.



Clips.jpg


Use a flat blade screwdriver or a plastic fastener removal tool to pull the xmas tree clips holding the AIT (Air Intake Temp sensor) harness and radiator overflow hose to the air intake tube.



Remv-Vac.jpg


Push in on the gray tab and disconnect the Crank Case Vent (CCV) from the air intake tube.



Rmv-AIT.jpg


Twist the AIT sensor (Air Intake Temp) counter-clockwise and carefully pull it from the air intake tube. We left the harness still attached, then carefully wrapped it in a shop towel and set it off to the side of the engine compartment.

TECH NOTE: If you leave the harness plugged into the sensor, you will not need to disconnect the battery to install this product. If you do unplug the sensor, it is recommended to disconnect battery to reset the computer.




TB-Clamp.jpg


Use a flat blade screwdriver to loosen the hose clamp at the throttle body.



Airbox-clamp.jpg


Use that same screwdriver to loosen the hose clamp at the air filter box.



Intake-Bolts.jpg


Use your 10mm socket and racket to remove the two 10mm bolts that hold the air intake tube to the radiator.



Remov-OE-Intake.jpg


Pull the air intake tube from the throttle body and air filter box and remove from the engine bay.



Airbox-Bolt.jpg


Remove the 10mm bolt at the end of the air filter box.



OE-FilterBox.jpg



Remove the OE air filter box from the Jeep. There are two snap-in mounting studs on the bottom of the air filter box. You will need to wiggle the air filter box back and forth while lifting up to get the studs to pop loose.




AB-Grmts.jpg


Then flip the OE air box upside down and take a look at the mounting studs. Often when you remove the OE filter box, the rubber grommets stay on the OE mounting studs. If so, pull them off…



stand-out-grommets.jpg


And reinstall them into the factory location on the fender well.





Injen-Parts-1.jpg


Now take a closer look at the Injen Cold Air Intake system; there isn’t many parts to it. The main components are called out in the above picture.







StandOff-Studs.jpg


Install the supplied stand-off studs and hardware to the Injen air filter box bracket and tighten securely.





Filter-Into-Airbox.jpg


Insert the Injen air filter into the air filter box, align the wave tabs, push the filter all the way into the filter box until the flange is tight against the filter box and give it a 1/8 turn to lock in place.

The SuperNano Air Filter is a high performance dry filter. No need to oil it and when it comes time to clean it, blow back through the filter with 35 psi of air and use your shop vac to suck up the dust and dirt from the outside of the filter.





AB-Brkt.jpg


You can install the Injen air box bracket to the air box while out of the vehicle and install into the Jeep in one piece. We found it easier to install them separately.

Note how the bracket is positioned in relation to the vented side of the air box.




Airbox-Brkt-In.jpg


First install the air filter bracket by aligning the stand-off studs with the air box mounting grommets and push the Injen filter box bracket into place. It might take a bit of wiggling to get the studs to snap into the grommets. A little soapy liquid will help them snap into place.



Bolt-In-Airbox.jpg


Set the Injen air filter box down against the brackets and bolt in place using the supplied hardware.
The vented side of the Injen box should be facing forward and the clear window with the Injen logo should be as shown above.




AIT-Grommet.jpg


Insert the AIT sensor grommet into the hole in the side of the Injen air intake tube.



Silicone-Hose.jpg




Slide the silicone hose onto the snout of the throttle body, slide the two hose clamps in place. and tighten the inner hose clamp.



Push-Intake-In.jpg


Push the Injen air intake tube into the flange of the Injen air filter and snug up the hose clamp. Do not fully tighten at this time.



Intake-On.jpg


Push the other end of the intake tube into the silicone hose at the throttle body.



HoseClamp1.jpg


Tighten the hose clamp at the throttle body end.



HoseClamp2.jpg


Go back and fully tighten the hose clamp at the air filter box.



Vacuum-Inst.jpg


Grab the CCV hose, squeeze the gray tab on the side and push onto the air intake tube.



AIT-In.jpg


Put a little soapy liquid on the green o-ring and carefully push the AIT sensor into the grommet on the side of the Injen air intake tube.

Only lube the green o-ring, do not get anything on the sensor’s element.




Zip-Tie.jpg


Zip-tie the AIT harness to the radiator overflow hose. Make sure to leave a little slack in the harness between the hose and the sensor for engine movement while running.



Injen-Fini.jpg


Now it’s time to step back and admire the trick looking new Injen Cold Air System in your JL. Then it’s time to take it out for a spin and see if you can feel the difference.


This tech write-up came from the Northridge Nation Blog: Cold Air Intake for your Jeep JL

Are you a member of the Northridge Nation? www.northridgenation.com





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Paluss

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I would like to see what the torque/hP curves look like before and after install, often times the stock paper filter gives you the flatest curve with out peaks and dips along the way...
 
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Tech Tim

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I would like to see what the torque/hP curves look like before and after install, often times the stock paper filter gives you the flatest curve with out peaks and dips along the way...
I requested the data sheets from Injen, will let you know what I hear back.


Awesome writeup!
Thanks!
 
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Tech Tim

Tech Tim

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I would like to see what the torque/hP curves look like before and after install, often times the stock paper filter gives you the flatest curve with out peaks and dips along the way...

@Paluss, Just got this dyno chart via email from Injen engineering....

PF5005.jpg
 
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Dynomite1371

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very interesting
 

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Standard 10 and 10 increases for a CAI pretty much.
 

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Tech Tim

Tech Tim

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