It arrived.. The K&N intake for my 04 350z !!!
I was incredibly lucky to visit the K&N facilty in Califoria a couple months ago and since that time I've been drooling over their Typhoon intake system for my 350z.
This will be my page for the unofficial guide to installing the K&N filter on the incredible Nissan 350z.
Feel free to hit me with comments or feedback if you have any questions regarding the install.
Here are all the necessary tools for this install
3mm Allen wrench
Torx screw head -- for disconnecting the mass air sensor
low profile car ramp -- necessary to install the "air scoop"
Lets begin the installation
Here's the kit when it first arrived..
The first couple steps should be self explanatory. Disconnect battery.
Remove the wire harness from the air sensor (simple clip).
The next step you will have to remove the bolt that secures the intake tube to the intake manifold
Loosen all the stock hose clamps from the throttle body & mass air sensor and lift the intake tube while disconnecting the crank case vent hose. The vent hose is located directly behind the intake tube.
Loosen and remove the one bolt that secures the air box to the inner fender hanger.
Remove the three plastic rivets from the bumper cover and the one plastic river from the air duct. The best method to remove the plastic rivets is with a simple slotted screwdriver.
Pull air inlet duct foward and remove.
Pull the air cleaner assembly upwards and out of the vehicle.
Loosen and remove the hex bolt that secures the bumper cover bracket to the core support, then remove bracket. This step is rather tricky and I would advise taking your time removing the bracket.
Remove the bolt that secures the mass air sensor harness bracket to the engine, the remove bracket.
remove the bolt that secures the air conditioner hard line bracket to the inner fender.
Secure the rubber mounted stud ot the short leg of the "z" bracket using the provided hardware. Secure "z" bracket undereath the air conditioner hardline bracket ot the threaded hole. Do not tighten completely. You will need to line up the bracket to the K&N air box.
Install K&N air box into the 350z and line up the mounting tab with the original hanger, then line up the lower mounting hole with the rubber mounted stud. Do not secure the air box just ensure that the "z" bracket is aligned with air box.
Remove air box and secure the "z" bracket. Do not move bracket since it needs to line up with K&N air box.
Reinstall K&N air box and secure.
Use provided K&N "bracket" to the timing chain cover, then secure the long leg of the bracket to the airbox.
Adjust air box to best fit and clearance. Then tighten all hardware.
Slide the air inlet tube into the vehicle. It's a tight fit I would suggest coming from an angle. In addition, I would highly recommend using a can of condensed air to clean the inside of the tube. Want to make sure that there is no debris in the intake tube.
Secure the tab on the air box using provided hardware. Do not tighten completely.
Install the provided bracket on the air inlet duct and remove the plastic grille center piece from 350z.
Install the air inlet duct from underneath the vehicle.
Slide the air inlet duct into the air inlet tube and line up with grill. Secure with the provided hardware to the aluminum cross member beneath the 350z grill.
Reinstall plastic grill piece, reinstall splash guard, reinstall the bumper cover bracket and rivets.
Install mass air sensor into the K&N typhoon intake tube. Pretty straight forward. Be extra careful about the mass air sensor when installing.
Install the silicone hose and hose clamps onto the throttle body.
Slide K&N Typhoon intake tube into engine compartment, reconnect crank case vent hose.
Slide the tube into the silicone hose on the throttle body.
Secure the tube bracket to the intake manifold using stock bolts.
Tighten all hardware on the air inlet tube and Typhoon tubes.
Install the K&N Filtercharger in K&N air box.
Install K&N carbon fiber air box cover and secure to the fender support bracket and bracket next to engine.
Reconnect mass air sensor connector and reconnect neg. terminal on battery.
Initial start up :
I would allow 5-10 minutes for the car to warm up and adjust for the newly installed intake. Listen for air leaks and odd noises (jiggling screw or bracket).
I noticed when I first started my car that the oil pressure gauge peaked over 60 psi for about 5-10 minutes. I have heard of this happening with other 350z owners and that "problem" will go away after warming up the car and taking it "around the block" for 15-20 minutes.
Hopefully this will help fellow Cardomain members interested in installing this product in their vehicle.
I've had the intake installed for over 2 weeks and I have definitely noticed an increase in mid range/high end response and a new,refined sound from the engine bay.
I will follow up with this install in the near future with a dyno test to see the results.
You can pick up this amazing product at the CarDomain Store
CarDomain Store -- K&N intake