Installing the ARM Motorsports Cold Air Intake on your N55 vehicle will improve airflow by reducing restrictions in the OEM intake system. It utilizes an inverted performance cone filter, aluminum piping, heat shield and a fitting for the OEM MAF sensor.
Loosen the clamp on the intake to turbo inlet hose with the 8mm socket. You will want it loose enough for the intake pipe to come away from the turbo inlet hose.
Remove the MAF sensor by removing the two screws holding it in place to the OEM intake with a T15 socket.
Remove the vacuum line to the left of the MAF sensor. You will do this by depressing the clips around the outside and base of the connection while simultaneously pulling up and away from the intake.
Pull back the weather stripping and rubber cover away from drivers side strut tower.
Now to pull out the OEM intake. You will want to grab the intake air box and the end by the turbo inlets and pull the entire unit up. There intake will pull up and pop out of 2 rubber grommets.
Remove the plastic cover just above the intake airbox that is on the drivers side strut tower. You will need to use a T15 bit to take out the screw holding it.
Place the ball joint with a stud into the grommet below the plastic covering that was just removed. The intake heat shield will be fixed onto this as well as the screw above it. These two points of connection are circled in red.
Seat the heat shield into its spot and fit the intake pipe through the hole. You will notice the stock ram air duct will still be used.
Screw down the MAF sensor into its new home using the included MAF sensor screws and place the vacuum hose onto the quick release fitting. Push this down until the clip has seated below the ridge.
Fit the clamp onto the intake pipe before putting the cone filter onto it, so that you can tighten it after the two are fitted properly. Once the filter is properly onto the piping, tighten down the clamp securely (8mm).
Tighten the clamp (8mm) on the turbo inlet around your new ARM intake.
Lastly you will need to install the weather stripping on the heat shield. You will need to measure and cut where applicable. The thicker stripping will go on the outside of the shield, while the thinner stripping will go around the intake pipe opening.
Now you are ready to take in the intoxicating turbo noises the N55 produces, that the stock intake hid from you! Check out our other supporting mods to help cool off the air going to the engine with our FMIC, or help the car dispense of exhaust gasses better while it’s sprinting with our downpipes!