This new intake plenum replaces the upper half of your factory intake manifold. This plenum bolts directly up to your car with zero modifications, and also allows the use of the factory strut bar, and engine cover. This unit will fit the 350z, the G35, and the FX.
This plenum increases the volume to the middle and more importantly the front cylinders. The factory plenum utilizes a very aggressive angle as it caps off the front cylinders. This new plenum equalizes the flow to all cylinders, while also increasing the total plenum volume. This plenum also uses a very versatile plastic to achieve a smooth interior for superior flow properties. The plastic also allows a lighter overall weight, by about 3 lbs. The overall temperatures of the plenum have also decreased by about 50 degrees farenheit. This helps with heat soak problems and to help lower air intake temperatures.
Our plenum has shown a solid peak gain of 14 rwhp and a consistent gain throughout the RPM range. When matched up with our high flow cats, they together have shown peak gains of 20 rwhp.
The plenum still retains all factory mounting points and also includes all necessary new hardware. The plenum also includes a permanently adhered flange gasket that is to be used with the factory gasket as well as a new throttle body gasket.
*This plenum includes a lifetime warranty on manufacturers defects. This will include any failure in the material used which may effect its ability to create a seal. We will also offer a new gasket service for a minor fee to replace any gaskets that have been damaged during installation or repetitive installations.
8plastic engine cover may need to be trimmed with the G35 or the FX35
The Motordyne plenum spacers alleviate an airflow restriction that exists above the first two intake runner inlets. The inside top of the stock plenum is very close to the top of the lower plenum runner inlets. There is only about 1/8 inch clearance between the first two inlets and the plenum cover. This creates a significant air flow restriction that reduces engine breathing and power output.
If the height of the flow area above the runner inlets were increased it by 1/8 inch it would reduce the flow restriction (pressure drop) by a factor of 4. If the height were increased once again by another 1/8 inch or to a total of 1/4 inch it would reduce the pressure drop by a factor of 9. If the plenum were lifted by a total of 3/8 inch it would reduce the pressure drop by a factor of 16. If it lifted by 1/2 inch it will reduce pressure drop by a factor of 25.
Reduction of pressure drop is asymptotic and inversely proportional to flow area. In other words this means the greatest benefit will be realized within the first 1/8 inch of added height. Fluid dynamic theory, dyno data and flow bench test data support this.
As an example, assume the pressure drop above the intake is equal to 3 PSID at high RPM. By raising the plenum even 1/8 inch the pressure drop will decrease to 0.75 PSID. That's a significant inlet pressure recovery that will translate into more horse power!
A 1/4 inch spacer will reduce that same pressure drop to 0.333 psid.
A 3/8 inch spacer will reduce that same pressure drop to 0.1875 psid.
A 1/2 inch spacer will reduce that same pressure drop to 0.120 psid.
Although pressure drop is continually decreasing, the rate of change rapidly diminishes beyond the first 1/4 inch.
The same applies to gained HP. The pressure drop above the runner inlets is so dramatically reduced the added HP gains are also rapidly diminishing.
The attached plots are for three sets of tests 1/2 inch, 1/4 inch and baseline in that order with three pulls each. The results of the 3 pulls per set were then averaged together. These test conditions were very tightly controlled to provide accurate, repeatable results.
Weather the car is NA or FI, the reductions in pressure drop will always be proportional to the air mass flow rate. Thus for a given spacer size, FI applications will see even greater gains due to the higher air mass flow rates.
Weather for NA or FI, nearly any kind of plenum mod is a significant improvement from the stock configuration.
The Motordyne MREV 2 Manifold Iso Thermal! A universal stealth mod for use on any 350Z, G35, M35 and FX 35. When used with or without a spacer or aftermarket plenum, this modified lower collector will make substantial power gains.
Standard lower collector with modified Intake Runners for reduced pressure drop.
Multiple independent test show when used with a 5/16 inch spacer on the REVUP engine, the combination will add a minimum of 15 HP and 18 TQ in the upper midrange. Many independent MREV 2 Manifold REVUP tests have dynod in excess of 20HP and 30 TQ in the upper midrange and with high RPM peak power increased by 3-5 HP.
On the road course or drag strip this lower collector adds substantial HP and TQ. No other normally aspirated VQ modification provides as much gains as MREV 2 Manifold!
The Apexi Power Intake is the premier air filter designed to create pure horsepower. The intake funnels used in racing machines take advantage of a characteristic where air travels along the side of the side of surfaces. However, the center portion of the funnel is virtually unused. It is this concept that gave birth to the Dual Funnel design. A primary funnel on the top portion of the air cleaner was inserted to channel the air flow directly into the lower funnels at the base of the cleaner. This design was a huge success on the former Super Intake model. The Power Intake took this design and improved the flow characteristics. New funnel design, element material and air flow channeling characteristics make the Power Intake one of the most efficient air cleaners on the market today. By constructing the upper and lower funnel from a highly durable injected resin, engineers were able to construct the ideal shaped funnel previously not possible with the stainless steel material. Funnel shapes focused on increasing air speed without changing the flow direction of the intake air. The result is a high speed and smooth flow of air into the intake. The lower funnel has been engineered at a 14 degree curve for maximum efficiency. Also, the lower funnel position has been made even closer to the base of the cleaner to reduce drag and eliminate any dead spots within the cleaner.
The Power Intake incorporates a newly developed material (layer filter of dry density fibers) which improves the element density. This allows maximum protection from foreign materials entering the engine. Compared with past model, the Power Intake has also succeeded in decreasing its ventilation resistance by about 10% (pressure loss) for maximum performance and protection. The Power Intake is dry-type filter and is trouble free. Some of the problems associated with wet type cleaners, such as oil sticking to the air flow meter, are a thing of the past. The Power Intake is basically maintenance free. Filter replacement, when necessary, can be done at a very low cost.
CONCEPT:
Air filter with minimal air-flow restriction
CHARACTERISTICS:
Dual funnel filter system minimizes intake turbulence
The APEX Aluminum Induction Box effectively shields the intake filter element from power robbing heat caused by turbocharged engines and extreme under the hood conditions. By fully enclosing the filter element and directing the intake air charge away from the heat soaked engine components, the APEX induction box helps prevent the ingestion of hot, preheated air from within the engine compartment. This reduction of intake air temperature promotes more efficient combustion, which in turn creates better performance and increased reliability. All components are manufactured by APEX to the highest standards to ensure precise fitment and maximum performance.
The Apexi Super Suction Kit is an intake adapter kit for hardcore enthusiasts wishing to convert their fuel injection system to D-Jetro (Pressure sensor type) or switch airflow meters with a higher capacity version from a different vehicle. This allows tuners to transcend the limitations of the factory fuel injection system and unleash the true power potential of their modified engine. The kit comes with a replacement intake pipe, filter, airflow meter clip (L-Jetro versions only) and all necessary hardware. D-Jetro versions require the installation of the separately sold pressure sensor, pressure sensor harness, intake air temp sensor and its corresponding harness
Comptech carbon fiber NSX air box utilizes ram air technology to add an impressive 8-9 horsepower at the wheels. Carbon Fiber construction is very light and yet extremely strong. Increases the size of the factory's air box opening. Dramatically increased fresh air flow. CARB Legal for street use in California.
HKS Super Mega Flow Reloaded Kits
HKS Super Mega Flow Reloaded intakes have been engineered to dramatically reduce the restriction caused by factory air boxes. The redesigned filter assembly has the same patented Super Funnel design from the previous generation, but also features new technical advances:
- Filter cage allows for 30% more intake surface area
- Aluminum back plate for added strength
- Sealing ring reduces contaminants from entering engine
- 3 Layer, triple density dry filter element
HKS Racing Suction Reloaded Kits
HKS Racing Suction Reloaded Kits have been developed as the leading intake system for high performance applications. Each kit features aluminum suction pipes that have been tested for optimal air flow. Included in each kit is HKS Reloaded filter with its patented Super-Funnel and new technical advances:
- Filter cage allows for 30% more intake surface area
- Aluminum back plate for added strength
- Sealing ring reduces contaminants from entering engine
- Dual Density wet filter element
HKS Super Mega Flow air intake systems have been engineered to dramatically reduce the restriction caused by sealed factory air boxes in both turbo and naturally aspirated applications. All Super Mega Flow intake filters utilize HKS patented Super-Funnel design that induces a Venturi-Effect. The Venturi-Effect states that in a converging funnel the entering gas velocity increases as it passes through a reduction in the funnels throat diameter. This increased velocity reduces air turbulence and provides improved engine response, horsepower and torque. Super Mega Flow kits are available in vehicle specific applications that include all the necessary mounting brackets and hardware for a complete installation. Universal Super Mega Flow assemblies are also available in either 150mm or 200mm filter diameter, and have inlets that range from 60mm to 100mm in diameter. Vehicle specific Super Mega Flow kits are CARB exempt per CARB Executive Order # D-186-19, or pending CARB exemption.
The Super Mega Flow system uses a honeycomb frame to distribute stress evenly and prevent the Filter Element from compressing which would reduce engine performance.
The HKS Super Mega Flow element is available in a 2-layer, dual density, wet-type polyurethane filter or in the all-new 3-layer, triple density, dry-type polyurethane filter. The former uses a viscous fluid to attract and stop damaging dirt particles from entering your engine. The latter uses three different densities of polyurethane filter bonded together to stop the damaging particles. Standard in the Super Mega Flow systems is either the HKS trademark green 2-layer Filter Element or the all-new blue 3-layer Filter Element. Replacement filter elements are available in various colors.
The Injen Injen Speed Pro (SP) line was developed for the enthusiasts that demands the best.
These Injen SP intake systems feature the Patent Pending MR Technology process for optimal gains and a safe a/f ratio.
The speed pro series does not limit itself to just a Cold Air Intake or Short Ram System. The MR Technology process has its effects on both types. Speed Pro is the -The Worlds First Tuned Intake System-
Injen Power-Flow Air Intake Systems incorporate Injens own patent pending MR Technology, engineered to the highest standards and utilizing the best technology available. The PF Series assures the highest horsepower/torque gains within safe factory air/fuel ratio limits.
Would you ever run a marathon breathing out of a small paper bag? So why ask your engine to rev all the way to redline breathing through the restrictive factory airbox? The plastic factory airbox is good at muffling intake noise and enhancing low rpm/low speed engine performance, but becomes very restrictive when the engine is operating in the higher rpm range where most performance drivers need it. The NEUSPEED P-Flo allows you to uncork the intake side of your engine, drawing in a nearly unlimited supply of fresh air. Most applications gain an honest 5-8hp at the wheels in the midrange and higher rpms (depending on the vehicle.) Plus, every P-Flo kit includes a high-performance, multi-layer cotton gauze air filter that is washable and reusable, and traps dirt better than your original paper filter. You also get an aggressive, deep throaty engine roar when you step on the gas pedal.
ACP
Apexi
Comptech
HKS
InJen
NEUSPEED
