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aFe Direct-Fit Cold Air Intake System Installation - 2013 GMC Sierra

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How to Install the aFe Direct-Fit Cold Air Intake System on a 2013 GMC Sierra


Speaker 1: Today on our 2013 GMC Sierra 2500, we'll be having a look at and installing the aFe Direct-Fit Cold Air Intake System with Pro Dry S Filter, part number: AFE51-12322. Also available with a Pro Guard 7 Oiled Filter as part number: AFE75-12322. Here's what our air intake system looks like installed. This filter combined with the system has 33% more air flow than the factory air intake system. This filter also offers us a 99.2% filtration efficiency rate, and it is a lifetime filter, it is oil-free, you don't ever have to worry about replacing it. When it's dirty, you can simply wash it off, let it dry, and stick it back inside your vehicle and you're good to go.Now, this filter will save you money in the long run because you don't ever have to worry about replacing the factory air filter ever again as required maintenance.

Also, the potential is there for increased horsepower gains and increased fuel economy, especially when you combine this filter system with other supporting mods, such as a computer programmer, or tuner. The reason this system provides more air flow to our vehicle, and the potential for more fuel economy and more power, not only is because of the increased size of the air flow, but because of the smoothness of the piping going into our turbo inlet. We no longer have the accordion style elbows of the factory airbox, which causes turbulence and disrupts air flow. The smooth flow of air going into our turbo inlet provides us with better power and better fuel economy.Here we are underneath the hood of our Sierra. We're gonna go over some features that our factory air intake system is lacking.

Okay, our factory air intake system, while it's efficient for a factory vehicle, if we're looking to improve fuel economy or add power to our vehicle, it's not adequate enough. Also, inside our factory airbox here, we have a stock paper filter, which is a little bit restrictive and is also expensive to replace when it's due for maintenance. We go back along our tube here, this accordion looking tube that connects our airbox to our vehicle's throttle body, you'll notice that this has these ridges in it, which disrupts air flow and causes turbulence, which takes away from power.Also, if you're looking to beef up the sound of your engine, this factory airbox isn't gonna cut if for you. We'll demonstrate that, showing what it sounds like stock. And now we'll do a take-off acceleration run to see what it sounds like.

And now we'll have the truck pass us to see what it sounds like underneath load. And now that you've heard the "before", let's show you what it sounds like after. And now we'll do a take-off acceleration as we're standing by this truck. And now we'll have it accelerate as it drives towards us.Okay, we find ourselves underneath our hood now, near our airbox. We've already made sure we've disconnected our negative battery terminal, and we want to make sure that we're working on a cool engine, too, that way we don't injure ourselves from the heat.

This is our Mass Airflow Sensor. We need to disconnect this. In order to disconnect our Mass Airflow Sensor, this white tab here, we need to slide back, then we can press in on the gray tab and pull back. Now, some vehicles may or may not have this sensor here; this is a humidity sensor. This one works the same way. We have a red tab, slide back, press in on the black tab, and pull to separate. Now, on the pipe that goes to our throttle body from our intercooler, we'll find a temperature sensor. We'll need to disconnect this harness by pressing on the tab here on the side and you can pull back. Then we'll slide the whole harness to the side, out of the way.Now we have two hose clamps one here next to our Mass Airflow Sensor, and one closer to the center of the engine that we need to remove. We'll just loosen these. With the hose clamps sufficiently loose, we can grab the pipes, pull, and remove it from the vehicle. Now we can remove our filter housing assembly with an upward pull to release it from its grommets, and we'll set that aside. Now, underneath where the factory airbox was, we have the tray that mounts it, with four 10mm bolts that we need to remove. With the bolts removed, the tray will lift up and we can set it aside. Also, there's a 10mm bolt right here that holds the top part of our passenger side headlight in, that we need to remove.Okay, now we can take our filter adapter and we can install it in our new airbox. We'll ensure that this part here sticks out from the box. We'll line up our five holes and use our 4mm button head screws. Now we'll tighten these down so the screws won't back off. We don't need to be overly tight; just enough so they will stay put. Now we'll take our filter adapter coupler, slide it on, making sure our holes line up with the cutouts for our screws. Now we'll take our weather seal and we'll run it along the outside edge of our box. We'll have to bend it as necessary. Okay, now we need to remove our Mass Airflow Sensor and our humidity sensor from the factory airbox, using a T20 Torx driver. Now, be sure you don't touch the little wire elements inside the Mass Airflow Sensor because the oils from your fingers can damage the sensor. Same with this sensor. Make sure you don't touch the wire elements inside.Now we'll slide our mass adapter into our intake tube near where the Mass Airflow Sensor will reside. Now, our Mass Airflow Sensor we'll make sure our o-ring is still attached. There's a nub on the sensor which will go inside this hole here. It'll only go in one way. So we'll line up the hole, drop it into place, and we'll secure it with our provided slotted screws. Now we can install our humidity sensor. If your vehicle was not equipped with one, you'll still have a hole in your intake tube that you'll need to address. You can take care of that with this gasket and this included block-off plate, which will be secured with these pan head screws that are 4mm. But since we have one, we won't be using this. It'll only go in one way to ensure that the holes line up, and we'll use our slotted screws to secure it.Okay, now we can install our new airbox into position, re-using the screws that held in the factory airbox shelf. We can easily see three of them. The fourth one is on the other side of this shelf, obscured by this angle. Now we'll slide our turbo inlet coupler onto our turbo inlet, making sure that the ridge lines up with that ridge. Now we'll take one of our hose clamps, slide it over our filter adapter. Now we'll take our elbow, slide it around our coolant hose, and slide the elbow onto the adapter, with the clamp now resting over the elbow. We'll leave everything loose right now for final adjustment. Now we'll take another one of our hose clamps, make sure it's loose enough, slide it over our elbow coupler, and we'll slide that onto our elbow. Now we'll take another one of the hose clamps, slide it over the other end of our elbow coupler. Now we'll take our intake pipe that has our Mass Airflow Sensor in it, place the clamp over the end that goes to the turbo inlet, and we'll connect everything together now.Now that we have everything in position, we can start to tighten our clamps. You'll notice how our elbow coupler here has the notch around our screw hole. We line everything up off that. Make sure everything is in line and flush against the box, and we'll start tightening; working from the front, back towards the turbo. Okay. Got all of our clamps tight and everything is lining up just the way it should. Okay, now we can plug back in all of our sensors. We'll start with the humidity sensor. Make sure we slide the locking tab back down. Mass Airflow Sensor. And last but not least, we'll plug back in our air charge temperature sensor. Now we'll reinstall the screw on our core support that holds our top part of the headlight in. Now our rubber edge piece, we'll slide over this area here to give us more of a weather seal. We have a little bit of excess on it so we'll cut off the end. Now we'll take our big clamp, slide it over the air filter, and install the air filter onto our adapter. And now we'll tighten that clamp.And that completes our look at and installation of the aFe Direct-Fit Cold Air Intake System with Pro Dry S Filter, part number: AFE51-12322, on our 2013 GMC Sierra 2500.


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