Cold Air Intakes

From Nissan 350Z & 370Z Wiki

Feed your VQ35DE what it wants! Cold air intakes route intake plumbing away from the hot engine bay areas, and deliver air through a free-flowing air filter and smooth intake passageways. The result? Cooler, denser air is delivered in greater quantities at higher velocities to your throttle body. Denser air, and more of it, equals power. The open air design of most of the aftermarket intakes (i.e. no airbox) gives the Nissan 350Z engine a more powerful grunt. If you're interested in adding horsepower and torque to your car, as well as giving it a more aggressive engine note, then adding a cold air intake should be your first step.

Most of the intakes listed on this page are compatible with the 350Z and G35. Performance of all the intakes are approximately equal, so pick the one that you think looks best and fits your budget.

Contents 1 VQ35DE Intakes 1.1 AEM 1.2 AFE Magnum Force 1.3 Blitz Carbon Suction 1.4 Central 20 1.5 Fujita 1.6 Gruppe M 1.7 HKS Racing Suction 1.8 Injen 1.9 K&N Aircharger 1.10 K&N Typhoon 1.11 Nismo 1.12 Top Secret 1.13 Ultimate Racing 2 VQ35HR Intakes 2.1 AEM 2.2 Fujita 2.3 JWT Popchargers 2.4 Stillen 3 From Wikipedia

VQ35DE Intakes

These are the available cold air intakes for the Nissan 350Z and Infiniti G35 with the VQ35DE engine. True short ram intakes are cold air intakes. They are intended to draw in cold air directly through an inlet duct or bumper cutout. However, most of these short ram style intakes are simply open filters in the engine bay. Some may actually be detrimental to performance since they are sucking in hot air from near the engine. These intakes should be combined with ducting of some sort to get the most from your 350Z.

AEM Avg Price: $$350.34 Part #: ? Design: True cold air, filter located outside engine bay in front of driver side wheel well. Material: 6061 aluminum, mandrel bent, Manufacturer: AEM Notes: CARB exempt or pending, hardware and instructions included, Limited lifetime warranty, Optional water bypass valve to help prevent water ingestion, Does Not Fit Convertible 350Z	AFE Magnum Force Avg Price: $$571.00 Part #: ? Design: Ram-Air Manufacturer: AFE Notes: Cleanable, reusable air filter	Blitz Carbon Suction Avg Price: $$850.00 Part #: ? Design: Ram-Air Material: Carbon Fiber ducting Manufacturer: Blitz	Central 20 Avg Price: $$360.00 Part #: ? Design: short ram type Manufacturer: Central 20 Notes: heat shield inclded
Fujita Avg Price: $$268.00 Part #: ? Design: short ram type Material: Aluminum piping (polished finish) Manufacturer: Fujita Notes: includes duffel bag and hat	Gruppe M Avg Price: $$1099 Part #: ? Design: Ram-Air Material: Carbon Fiber duct Manufacturer: Gruppe-M Notes:	HKS Racing Suction Avg Price: $$425.00 Part #: ? Design: Ram-Air Material: Cast or mandrel bent aluminum suction pipes Manufacturer: HKS Notes: Repaces intake pipe and MAF housing	Injen Avg Price: $$360.00 Part #: ? Design: Cold-air Material: Aluminum and Silicon Hose Manufacturer: Injen Notes: Eliminates Stock MAF Sensor housing, filter sits forward of radiator
K&N Aircharger Avg Price: $$329.00 Part #: ? Design: Ram-Air Material: non-metallic rotationally molded tubes, Manufacturer: K&N	K&N Typhoon Avg Price: $$386.00 Part #: ? Design: Ram-Air Material: Free-flowing 3-inch mandrel-bent aluminum tube & K&N's Filtercharger Element. Carbon Fiber box Manufacturer: K&N	Nismo Avg Price: $$380.00 Part #: ? Design: Ram-Air Material: Reusable, washable air filter Material: 6061 aluminum, 3" tubing Precise Manufacturer: Nismo Notes: These R-tune parts are not warranted by Nissan. Same as AEM but with water bypass
Top Secret Part #: ? Design: Inake + Maf housing replacement Manufacturer: Top Secret Notes: Filter not included	Ultimate Racing Avg Price: $$195.00 Part #: ? Design: Ram-Air Material: 304 Stainless Steel Construction, CNC Mandrel Bends, High-Flow K&N Filter Manufacturer: Ultimate Racing

VQ35HR Intakes

These are the available cold air intakes for the Nissan 350Z and Infiniti G35 with the VQ35HR engine. True short ram intakes are cold air intakes. They are intended to draw in cold air directly through an inlet duct or bumper cutout. However, most of these short ram style intakes are simply open filters in the engine bay. Some may actually be detrimental to performance since they are sucking in hot air from near the engine. These intakes should be combined with ducting of some sort to get the most from your 350Z.

AEM Avg Price: $$450 Part #: 22-677P Design: Short ram style Material: 6061 aluminum, mandrel bent, Manufacturer: AEM Notes: P: polished C: powdered silver

Fujita Avg Price: $$305 Part #: SR-2835 Design: short ram type Material: Aluminum piping (polished finish) Manufacturer: Fujita

JWT Popchargers Avg Price: $$395 Part #: ? Design: short ram type Material: Aluminum piping (polished finish) Manufacturer: JWT Notes:

Stillen Avg Price: $$399 Part #: 402837 Design: Ram-Air Material: Reusable, washable air filter Material: 6061 aluminum, 3" tubing Precise Manufacturer: Nismo

From Wikipedia

A cold air intake is a system used to bring down the temperature of the air going into a car for the purpose of increasing the power of the internal-combustion engine. A secondary goal is to increase the appeal of a car by changing the appearance of a car's engine bay and creating an attractive intake noise. These aftermarket parts come in many different colors and many different sizes, and are an inexpensive way to increase performance.

Aftermarket company, K&N Engineering first offered air intake systems in the late 1980s. Those intakes consisted of rotationally-molded plastic intake tubes and a conical, cotton gauze air filter. In the late 1990s a proliferation of intake manufacturers such as AEM, Airaid and Volant entered the fray. In addition, oversea manufacturers imported their designs lending to the popularity of Japan domestic market (JDM) air intakes in sport compact markets. K&N and many of the other intake companies now offer intake systems in metal tube designs, allowing a greater degree of customization (the tubes can be powder-coated or painted to match a vehicle).

All cold air intakes operate on the principal of increasing the amount of oxygen available for combustion with fuel. Because cooler air has more density for a given volume, cold air intakes generally work by providing cooler air from outside the hot engine bay. However, the term "cold air intake" is often used to describe other methods of increasing oxygen to an engine, which may even increase the temperature of the air coming into an engine.

Some strategies used in designing cold-air intakes are:

• increasing the diameter of the air intake, allowing increased airflow.
• smoothing the interior of the intake to reduce air resistance.
• providing a more direct route to the air intake.
• tuning the length of the intake to provide the most airflow at certain RPMs.
• using a more efficient air filter

Intake systems come in many different styles and can be constructed from plastic, metal, rubber (silicone) or composite materials (fiberglass, carbon fiber or kevlar). Due to the limited time air actually remains inside the intake tubing, the materials often do not impact a kit's ability to deliver cool air.

The most basic cold air intake replaces the stock airbox with a short metal or plastic tube leading to a conical air filter, called a Short ram air intake. The power gained by this method can vary depending on how restrictive the factory airbox is. The placement of the filter is usually directly in the engine compartment. The overall benefits depend on the specific application. Power may be lost at certain engine speeds, only to be gained at others. Because of the increased airflow and reduced covering, intake noise is usually increased. This effect is usually amplified on applications where a resonator, a part intended to reduce intake noise on some vehicles is replaced by the intake.

Better designed intakes use heat shields to isolate the air filter from the rest of the engine compartment, providing cooler air from the front or side of the engine bay. Carbon fiber can be used for the piping instead of metal, lowering weight and insulating the air from the engine bay in some cases. Carbon fiber and other advanced composites (such as Kevlar) come at significant costs and are often more aesthetic rather than functional (unless the application is a serious race vehicle).

The most extreme designs, sometimes referred to as Complete Cold Air (CCA) intakes, route air from outside the engine bay, usually from the wheel wells, front grill, or a hood scoop. The intake can be placed such that the forward motion of the car pressurises the air coming in, creating a ram-air intake. These intakes often require additional modifications and can require body modifications or replacement panels, such as a replacement "ram air-style" hood.

The best cold-air intakes are optimized for a specific engine application, providing increased airflow at ambient temperature and raising power at all engine speeds.

When using a cold air intake, there is a potential risk when driving in the rain. This is often referred to as "hydrolock", and according to the automotive portal, MODsearch: "Say it's raining cats and dogs and you're out for a spin in your car. Normally you'd love to rip through puddles without thinking twice, but because your engine is now getting air from inside your bumper you have to be careful. If your engine manages to suck up any amount of water through the intake and into the engine you will probably have little to no horsepower left. In other words, be careful." So, it is important to take the necessary precautions when using a cold air intake so you do not end up flooding your engine. This may include installing a water shield in your intake or not driving in the rain at all. It is also notable that less damage will occur from water getting in the engine on a rotary engine car, as opposed to a piston engine car.