by Tom Siller

How To Install a Cold Air Intake System On a Nissan Skyline

These days, aftermarket air kits are specifically designed to be an easy fit. However, the installation can prove to be rather difficult, especially if you don’t have much experience with third-party gear. In this detailed guide, I’ll teach you how to properly install a Cold Air Intake System on a Nissan Skyline on your own, without an extra set of hands.

All you’ll have to do is follow my lead carefully, and we’ll be done in no time! First, we’ll have to figure out what kind of a cold air intake system will fit your car. The next step would be to remove the factory gear. Finally, we’ll go over the installation of a new, shiny air intake kit.

#1: Getting Started

Owners of “generic” vehicles (a Toyota Camry or a Honda Civic, for example) have it easy. All they need to remember is their car’s model year and engine type. With the Skyline, things can be a bit tricky. If it’s a customized ride, you might want to double-check to make sure an aftermarket air kit will be a perfect fit. If it seems like too much work, ask a pro to help you out (maybe like the guy at the body shop).

Once you’ve got the right fit and are ready to get down to work, the first thing to do is to park the vehicle properly. Ideally, the surface needs to be even, and there should be enough space around the car for you not to feel cramped. Turn the Sky off, wait for the engine to get really cool, and unplug the battery. Start with the negative (-) terminal and move on to the positive one (+).

#2: Handling the Factory Air Intake

Before we can install the new Cold Air Intake, we’ll have to get rid of the factory kit. Pop the hood and you’ll see a fairly big plastic box connected to a tube running from the motor. The system consists of three separate parts: an air filter, an airbox, and an intake tube. To remove them, get rid of the mounts – they’re making sure the kit is sitting in the engine bay steadily. Use a socket for that.

And if there are hose clamps connecting the tube to the filter, use a screwdriver (or, again, a socket) to loosen them. Oh, and don’t forget about the air sensor – it sends info to the Skyline’s computer. Remove it carefully. This is important: don’t get rid of the stock air intake just yet. Chances are, the new system won’t be a perfect fit, and you’ll have to reinstall the good old factory gear.

#3: Installing the Aftermarket Gear

Alright, now we can finally move on to installing our brand-new cold air intake. After removing the stock kit, I’m sure you have at least some understanding of how it all works. Besides, most aftermarket manufacturers include detailed instructions that help make sense of things. Follow the instructions closely and do everything exactly how it says. The biggest mistake that most amateurs make is they forget about the hose clamps.

That can lead to undesirable consequences like a loss of power or even worse. Again, be extra careful with the sensor, as it’s quite a fragile, but important component. Remember: the air intake tube always goes first. The filter comes next. If the manual tells you to climb under the Skyline to finish the job, do exactly that. Air systems need to have access to cold outside air to “push” it into the engine bay.

Make sure all the hose clamps, couplers, nuts, and bolts are secure. The road isn’t always even – there can be rocks, bumps, mud, and everything else in between. So, it’s very important for the intake system to be properly secured. Otherwise, it will start jumping up and down, making strange noises, and (potentially) getting damaged.

Before you start the engine, don’t forget about the battery. Re-attach the positive terminal first, and then the negative one. That’s pretty much it!