First Start by disconnecting the wire along the intake tube as shown. You must slide the gray part of the plug to the left to unlatch it.
Second Disconnect the wire to the Mass Airflow Sensor as shown. On the underside of the connector, there is a red slider that you must slide away from the tube (toward the front of the car). It should slide right out.
Third Loosen the clamp around the throttle body
Fourth Remove the 10mm screw that hold the airbox to the engine bay. It is on the right of the airbox on the driver side. You will most likely need a ratchet with an extender.
Fifth Remove the entire air intake assembly. There are 2 plastic pins that will keep the connector to the mass airflow sensor cable in place. Pop those out.
SixthRemove the Mass airflow sensor module from the stock intake using the provided tor-x head. (you will need an interchangeable head screw driver). Then put it into the new aluminum sensor body that comes with the kit. It will only fit in one way, so you cant mess it up.
Seventh Go ahead and attach the 3" rubber tube to the Mass airflow body and the large in of the inlet pipe. MAKE SURE THAT the sensor opening is facing TOWARD the inlet of the pipe (the direction of where the filter will be) The fit will be super tight, so i found that using a screw driver to work the edges around worked best. Also, putting the clamps on the inlet tube BEFORE the rubber tube might help later on. If you have a manual, then you will wanna use the capping screw provided to seal off the extra hole that you notice on the inlet tube. If you have an automatic, then you might have noticed that you needed to disconnect a 3rd cable from the inlet tube... dont seal it if you have an automatic. Instead use the other adapter provided in the kit so that you can connect that 3rd cable.
Eight Put the airflow "case" into the engine bay. This is where it gets fun. You will actually need to make a hole in the rubber around the intake vent from the grill. The directions say to use a drill, but i ended up using a screw to punch a hole into it. The hole is for the bottom mounting bolt that keeps the vent secured to the case.
NineNow attach the other 3" tube to the other end of the inlet pipe. This was extremely difficult and took the most amount of time. Again, try to use the screwdriver to work the edges around.
Ten Connect the whole assembly to the throttle body and try to make sure that you situate the angle so that the cable connecting to the inlet tube doesnt have a lot of pressure or stress on it. The complete assembly is shown below.Go ahead and tighten the brackets around the 3" tubes down, but not all of the way.
Eleven Place the filter on and situate the rest of the entire assembly so that no part of the filter is touching the plastic housing. It should only slightly rest on the bottom.
TwelveOnce you have everything situated, go ahead and secure all of the brackets and make sure everything it tightened down. Reattach the cables/tubes and start er' up.