L15-6-308-10 Cold Air Intake

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Aftermarket transmission coolers may not fit with our intake

Locate the engine under tray to gain access to the OE lower airbox

Use 5mm Allen Key to remove the two (2) bolts shown in green circles

Use 10mm socket & ratchet to remove the seven (7) bolts shown in red circles

Use a flathead screwdriver to remove the seventeen (17) plastic push-clips. Orange arrows identify the push-clips in described in the next step (3)

Use large flat head screw driver to remove push-clips on each side of skidtray

Disconnect the wiring harness from the MAF Sensor

Remove the wire cover from the airbox

Use needle noise pliers to pinch the clips then pull the cover off the airbox

The MAF wire cover consist of two halves that are held together by push lock clips. These will need to be unlocked to remove the cover

Step 6 will show how to pull apart MAF wire cover

Using small flathead screwdriver, gently pry between the square loop and the prong, then pry the prong out of the loop

It takes very little force to insert the flathead screwdriver and pry loose, try not to break the square loop

With all four prongs unlocked the cover should open as shown

Pull the wire out of the cover and wrap the exposed section in electrical tape

Use a small Phillips screwdriver to remove the two screws

Remove the MAF sensor from the airbox and reinstall the OE screws into the airbox, they are not used in the 27WON CAI

Base Model MAF Sensor shown, SI MAF Sensor removal is same

Use a 5.5mm socket to loosen the hose clamp

A small phillips screwdriver can be used, but is not recommend because the hose clamp head strips easily

Use a 10mm socket and long extension to unthread the two silver mounting bolts

You can leave the bolts loose in position during airbox removal

Pull the hose off the turbo inlet pipe in the direction of the arrow

With the hose loose, remove the entire airbox from the engine bay

The result will look as shown in the second image

From under the vehicle locate the two bolts, use a 10mm socket & ratchet to remove the two bolts

Remove the lower airbox assembly from the vehicle

The result will look as shown in the second image

From under the vehicle, locate lower airbox assembly mounting bracket

Use a 10mm socket & ratchet to remove the bolt

Remove the bracket from the vehicle

The red square shows where the lower inlet of the airbox will sit in the engine bay and fender well

Locate the provided rubber isolator standoff for step 15

Locate the provided rubber dampener for step 16

Locate threaded hole in the core support for manual transmissions

Locate threaded hole in the core support for Automatic transmissions

Install the rubber isolator standoff in the threaded hole closest to the turbocharger. Tighten hand tight using your fingers

There are two threaded holes located in the core support, use the hole closest to the turbocharger. Don't use the hole marked in yellow

Locate threaded hole in the bracket for manual transmissions

Locate threaded hole in the bracket for Automatic transmissions

Install the rubber dampener in the threaded hole found in the bracket, tight hand tight with fingers

The bracket is mounted to the chassis rail next to the ECU

Carefully pry the 9 plastic clips open with a flat head screw driver

Clips are fragile and can easily break if to much force is applied

Locate the OE Airbox Assembly

Identify one of the OE rubber mounts and remove the OE bolt (the bolt should be loose in the mount)

Keep this bolt, it will be used later

Press the metal collar out of the rubber mount with your hands.

Pinch the rubber mount together then remove the rubber mount from the OE airbox assembly

Locate the Long Bracket

Locate the Short Bracket

Locate QTY=4 M5x0.8x12mm Hex Head Bolts

Install the OE rubber mount and steel collar as shown

Use a 3mm Allen Key to remove the four flanged button head bolts holding the lid on

Remove the protective cover on the lid and set the lid aside on a non-abrasive surface

Unwanted scratches could occur if lid is not handled with care

With the lid removed you now have access to the air filter and the inner airbox mounting location

Using a 8mm socket and ratchet, install the bracket as shown

Torque bolts to 24-48 in-lbs

Locate the OE airbox mounting bolt

Locate the provided QTY=1 M6x1.0 Flange Nut

Locate the provided QTY=1 M6x1.0 Hex Head Bolt

This Clearance warning applies to vehicles with automatic transmissions. Skip step if vehicle has a manual transmission.

Inside the orange box there are multiple tight clearances due to the CVT.

Be careful not to run into this sensor. The airbox will clear the sensor but carelessness when inserting the box could damage the sensor

The bottom of the airbox fits right into this square opening

In some cars, airbox may touch this sensor. It is ok. Give us a call if this concerns you

Be careful not to run into the transmission cooler. The airbox will clear the cooler but carelessness when inserting the airbox could damage the airbox

Aftermarket transmission coolers may not fit with our intake

Before positioning the 27WON airbox into the engine bay, please identify the correct mounting locations

Manual transmission inner airbox mounting point

Manual transmission long bracket mounting point

Manual transmission short bracket mounting point

Automatic transmission inner airbox mounting point

Automatic transmission long bracket mounting point

Automatic transmission short bracket mounting point

Lower the 27WON airbox into the engine in the orientation shown.

Swivel the airbox into position

Now that the airbox is in position. Attach the provided short bracket to the airbox with (2) M5x0.8X12mm hex head bolts and a 8mm wrench

Aline the slotted end of the short bracket onto the rubber isolator

Thread the provided M6x1.0 flange nut onto the rubber isolator. The nut should be loose enough to allow the airbox to still slide within the slotted hole

Aline the inner hole with the hole in the rubber dampener and insert the provided hex head M6x8mm bolt. Tighten using a 10mm socket with an extension and a ratchet

Tighten the bolt to 12-24 in-lbs

Do not over tighten the bolt. This could damage the airbox.

Aline on the Long bracket with the threaded hole in the chassis

Insert the OE bolt into the long bracket

Tighten with a 10mm socket with extension and ratchet, Torque the OE bolt in the long bracket to 36-48 in-lbs

Tighten the M6x1.0 flange nut on the rubber isolator using a 10mm socket and ratchet to 24-36 in-lbs

Place the airbox lid onto the airbox

Install the four M5x0.5x16mm flanged button head bolts, Tighten the bolts to 12 in-lbs

The lid can crack if significantly over-tightened.

If the holes in the lid do not want to align exactly with the threaded inserts, you can lightly twist/push the airbox. The mounting process can distort the shape of the bow slightly. This is nothing to worry about

The MAF housing comes assembled with the necessary MAF sensor installation hardware

The MAF housing has a small cutout at the top for the wiring harness. This cutout will face the rear of the vehicle once installed

Silicone coupler between the MAF housing and the OE turbo inlet pipe

Silicone coupler between the MAF housing and the airbox

On both silicone couplers there is a "W" logo. The bottom of the "W" will face the front of the vehicle once installed

Use a 3mm Allen Key to remove the socket cap bolts from the MAF housing

Install the MAF sensor into the housing

If you are having issues, push the sensor into the housing while turning the sensor, this should help

Be careful to not pinch and damage the o-ring on the sensor

Align the sensor with the stainless steel standoff and install the socket cap bolts

Torque the socket cap bolts to 24-48 in-lbs

Locate the provided QTY=1 67-75mm clamps.

Locate the provided QTY=1 86-94mm clamp

The 108-116mm clamp is already installed on the air filter

Verify that your MAF & Silicone Assembly has came as shown

Install the 67-75mm clamp loose as shown

Install the 86-94mm clamp loose as shown

A small gap between the end of the silicone and the MAF housing is normal. This is required for proper connection of the internal step in the silicone

Angle the MAF & Silicone assembly into the engine bay and onto the airbox

Verify the silicone coupler connecting to the airbox is over the circumference of the airbox outlet

Pivot the MAF & Silicone assembly down and onto the turbo inlet pipe

The silicone coupler is flexible enough to bend and distort as needed to fit over the turbo inlet pipe

Adjust the silicone coupler to fit around the entrance of the turbo inlet pipe

If needed, rotate the MAF & Silicone assembly so the MAF sensor and "W" are facing upward as shown

Use a 10mm wrench or socket and wrench to tighten the 86-94mm clamp on the airbox

Use a 10mm wrench or socket and wrench to tighten the 67-75mm clamp on the turbo inlet pipe

Tighten the clamps until snug (the silicone will start to bulge at the edge of the clamp slightly)

Connect the wiring harness to the MAF sensor as shown

Check clearance of the clamp at the turbo inlet pipe, verify there is approximately 3/4" clearance from the end of the T-bolt rod to the core support. Rotate clamp to adjust if necessary

Reinstall radiator fan guard by inserting the 9 plastic clips and pressing down on them with your thumb

Re-install the 10mm bolts with a 10mm socket & torque wrench. Torque to 8-12 ft-lbs

Re-install the 5mm socket flange bolts with the 5mm Allen key & torque wrench. Torque to 6-8 ft-lbs

Re-install the push clips at the bottom of the undertray and the sides (shown in Step 2)

Re-install the push clips at the side of the undertray

This completes the installation of your 27WON Performance Cold Air Intake System.

We hope you were impressed with your 27WON experience and love your new Cold Air Intake for years to come. Email us at sales@27won.com or call us at 571-271-0271 with any questions or concerns

We recommend going to the next step to learn how to service the air filter or check our video on cleaning the air filter at https://youtu.be/nE7diTeI4Gw

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The next step explains how to remove and reinstall your air filter for cleaning and service.

When re-installing your air filter be careful not to compress the velocity stack on the air box to a point of deformation. Doing so can cause the air box to crack and the air filter to fall off

Here we show how to remove the air filter for standard maintenence

Use a 3mm Allen Key to remove the four bolts, then remove the airbox lid

Use a 10mm socket and wrench to loosen the clamp

Pull the air filter off the airbox velocity stack then pull the filter straight up and out of the airbox

The air filter is a tight squeeze to remove, do not worry if the airbox or air filter flex or distorts slightly

Reinstall the air filter in the reverse order.

Hold the air filter tight against the airbox velocity stack and tighten the clamp snug. Verify the air filter cannot be pulled loose with a gentle tug

Verify that the T-bolt rod is not protruded past the top of the airbox, this would damage the airbox lid