How to Install an Injen Power-Flow Cold Air Intake w/ Power Box - Polished on your Ford F-150

Note: The installation of this cold air intake does require mechanical skills. Removal of the front bumper requires loosening and removing several plastic plugs and screws that may be difficult. It is recommended that this system be installed by a professional mechanic. Be sure to disconnect the negative terminal before proceeding.

Congratulations! You have just purchased the worlds first tuned intake system.
MR Technology, Leading the way!

Remove the upper crank case breather line by pressing
on green clip and pulling out.

Remove the crank case breather line connected to the
valve cover. (A). vacuum line disconnected shown in
figure 3. (B)

Entire crank case breather line is removed.

Use a 10mm socket with 3/8 rachet and remove four
10mm bolts holding the air box cleaner to the intake
manifold. Arrows indicating bolt locations

Remove bolt 10mm bolt mounting intake duct to engine.

Pull the intake duct connected to the fender well to
the left and pull out. (A) Remove entire air box
cleaner assembly. (B)

Entire air box cleaner assembly removed.

Take the 16”-10mm vacuum hose and place
it over the crank case port. The other end
will be connected to the intake pipe later.

Take the 3 1/2” 90 degree elbow and tw056 clamps and insert short end
of elbow over the trottle body. (Figure A) 90 degree hose shown on throttle
body with both clamps loose. (Figure B)

Screw the M6 vibra-mount on to the factory air box bracket
(Figure A) Vibra-Mount mounted on to bracket. (Figure
B)

Remove the two screws that secure the MAF sensor
to the stock air box and then remopve the MAF sensor.
(Figure A) Re-install the MAF sensor onto the
machined adapter on the intake pipe. (Figure B)

Take the 3 3/4” straight hose and press it over the
Power-box velocity stack inlet port. Again, place
two large clamps over each end of straight hose.

With the rectangular screen facing you, remove the 2
bolts on the left side of the Power-box as pictured
above

Take Power-Flow bracket and line it up to the bolt
pattern on the box as shown above.

Re-install the 65mm bolts removed earlier and continue
to bolt down bracket to the velocity stack base.

Insert the two 65mm bolts and screw into Power-box until they are fully tightened
and the bracket is firmly secured.

The one inch rubber bridge is placed under the bracket tongue as shown in this
picture (A). Figure (B) illustrated how and where the bridge will be located under
the Power-box prior to inserting into the grommets.

With the Power-box fully assembled, place intake box over the battery tray and
press bridge prongs into the two grommets.

The Power-box is now firmly in place and ready for the installation of the intake
tube.

Line up the Power-Flow intake and insert ends into the silicone
hose on the throttle body (A) and into the hose on the power-box
(B).

Press the 3 3/4” end of intake into the straight
hose located on Power-box velocity stack.

Align intake bracket to the vibra-mount stud
until in seats flush to the vibra-mount.

With the Power-Flow intake pressed into the Power-box
hose, semi-tighten both clamps to hold the box and
intake in place.

The m6 flange nut and fender washer are used to
secure the intake bracket in place.

Locate harness clip and press over MAF sensor
until you hear a click, which indicates a good connection.

The remaining 16”- 10mm hose is pressed over the intake port (B) the intake
track has been inserted into the 3 1/2” elbow and the clamp is tightened (A) A
complete install of the intake is shown above and the vacuum hose is pressed
over the 1/2” intake port (C).

Congratulations! You have just completed the installation of this Power-Flow
intake system. Periodically, check the fitment of the intake track and Power-box
in order to avoid damage to the intake system that could void the warranty.

You have purchased the Worlds first tuned intake system available anywhere. The Power-Flow intake system features Injen’s patent pending MR Technology used to tune the intake and Power-Flow box. With Power-Flow, calibrating of the MAF sensor is not required because the intake system comes tuned for use. 

Assembly and disassembly instructions for the Power Box for the purpose of cleaning screens and filter.

Here are the four-m6 x 20mm bolts that will be
removed from the velocity stack base located on
the corners of the base.

Unbolt the four- m6 x 20mm screws from the
velocity stack base located to the center of the base
Now separate the base from the velocity stack.

The four m6 x m20 bolts have been removed from
the top of the velocity stack,

Pull the velocity stack base with the filter that is
attached to the velocity stack.

The velocity stack with filter is now out of the power
box body.

Loosen the clamp on the filter neck in order to separate
the filter from the velocity stack

Once you have loosened the filter neck clamp, continue
to pull the filter from the velocity stack,

The rectangular pre-filter screen is now slipped out
of the channel along the body of the power box.

Here is a group shot of the components that goes
into the power-box. The filter and screens can now
be cleaned with a simple shop-vac.

1. Upon completion of the installation, reconnect the negative battery terminal before you start the engine.

2. Align the entire intake system for the best possible fit. Once the intake has been properly fitted continue to tighten all nuts, bolts and clamps.

3. Periodically, recheck the alignment of the intake system and make sure there is proper clearance around and along the length of the intake. Failure to follow proper maintenance procedures may cause damage to the intake and will void the warranty.

4. Start the engine and listen carefully for any odd noises, rattles and/or air leaks prior to taking it for a test drive. If any problems arise go back and check the vacuum lines, hoses and clamps that maybe causing leaks or rattles and correct the problem.

5. Check the filter for excessive dirt build up. Clean or replace the filter with an original Injen filter (can be bought on-line at “injenonline.com”). Congratulations! You have just completed the installation of the best intake system sold on the market. Enjoy the added power and performance of your new intake system.