Description

Subaru WRX RSK STI VAB 70020-AF108

Code No. 70020-AF108

The most powerful intake system carefully designed to fit engine room of a vehicle. HKS Racing Suction pushes air intake system efficiency to the limits.

Stealth frame is redesigned!

“Hyper Stealth Frame” exceeds the performance of previous Super Stealth frame.
Increasing air intake surface area by 27% improves air intake efficiency.

redesigned stealth frame

Bold white HKS logo printed on black anodized back plate accentuates the engine bay!

The outer edge of the funnel is securely fixed to the aluminum back plate. Use of aluminum significantly improves rigidity and durability. Alumite process improves surface of the funnel and also provides a sleek black look.

black anodized back plate

Real sports

TECHNOLOGY

Vehicle specific suction pipe design.
Angle and length of pipe enhance the induction efficiency.
It is effective for quick response for NA engines and higher performance for turbocharged engines.

Point

With stock suction system, induction air hit to corrugated portion of hose and makes swirl and resistance. The specially designed pipe reduces corrugated portion and gap inside pipe to make air flow smoother.

Features

Frame Support
Fits flexibly to aluminum back plate, securely fixes hyper stealth frame. It also serves as a guide for attaching the filter to the hemispherical surface, improving maintainability such as filter replacement.
Racing suction adopted wet two-layer type
The filter element is a wet 2-layer polyurethane form impregnated with a special high viscosity adhesive.
Filter porosity is designed as large as possible to provide high air intake flow efficiency without sacrificing filtration ability.
* Dry type three layer type exchange filter can also be used
Super Inner Frame
The cross section of the inner frame is streamlined with 16 frames parabolically placed towards the center.
Simple lightweight frame design provides smoother air flow.
Super Lip Funnel
The defining feature of HKS intake: “Super Lip Funnel”.
Super Lip Funnel maximizes air intake surface area in the limited space in the engine bay and optimizes air intake efficiency.

HKS Racing Suction is a high efficiency air intake device and may cause irregularities in the engine work. HKS recommends considering a total tuning concept combining this product with a sport exhaust system and

Code No. 70020-AF108

Racing suctions combines SUPER POWER FLOW (an open type filter) with aluminum pipe to improve air intake efficiency

Subaru WRX RSK STI VAB 70020-AF108

■Features

Kit includes Super Power Flow and Aluminum Suction pipe. Polished aluminum pipe improves engine room appearance.
Enjoy a distinctive induction sound.
Improving an air intake efficiency, HKS changed from flexible stock rubber hose to aluminum pipe. This significantly reduces an airflow restriction at an HKS flow bench test compared to the stock intake system.
Removable air duct (air guide) which has a wide opening is newly designed. This can be directly used stock ECU even for the normal vehicle or the vehicle with a custom muffler. You can reduce more air intake resistance, removing the air guide. (*)
(*) ECU setting is required when combination use of the metal catalyzer or removing the airflow adapter guide.

blueprint

■with/without air duct

with air duct

without air duct

The air duct is a removable part. Reduced more air intake resistance, removing the air duct which enlarge the inner diameter.
* ECU setting is required when removing the air duct.

■ECU when used with HKS parts

HKS Parts	ECU
Mufflers	Stock ECU
Metal catalyzer	PHASE2 of Flash Editor is not compatible with Metal Catalyzer. Please customize the data for your car accordingly.
Dry carbon suction	Stock ECU
GT III Sport turbine kit	ECU setting at the actual vehicle is required.

Note: ECU setting at the actual vehicles is required when removing the air duct in every vehicle specifications.