CFRP INTAKE SYSTEM

 

Features 

• CFRP (Carbon Fiber Reinforced Polymer) is utilized for the primary components, including the piping and air cleaner box, to achieve a weight reduction of approximately 65% compared to the factory intake system. For enhanced heat resistance, a high heat-resistant prepreg with a temperature resistance of 350°C or higher is employed for the chamber pipe after supercharging and the suction pipe near the turbine, as these components are exposed to high temperatures.

   

• The cleaner box has also been specially designed with CFRP, contributing to weight reduction. The air filter surface area has also been increased by approximately 6% to improve intake efficiency. The air flow sensor is not a stock component which increases the pipe diameter. 
  The entire layout has been reviewed to achieve higher efficiency and a dedicated washer tank is also included in the kit. 
  

   

• The pressure loss has been significantly decreased by 46% compared to the previous installation of the HKS special piping kit. This improvement is achieved through an enlarged suction capacity and an increased cross-sectional area for introducing outside air. The dual intake ducts allow for approximately 2.4 times more air to enter than the stock system. 

  

  

•  The enclosed design minimizes the intake of hot air into the engine compartment, resulting in a reduction of up to 60% in intake air temperature during WLTC mode when compared to the exposed HKS Super Power Flow system.

  

  

  

•  An anti-surge plate, also known as a surge suppression rectifier plate, has been installed in the suction pipe to address the issue of intake air interference, which has been a persistent problem in the RB26 twin-turbo layout. This plate effectively increases the margin for intake air flow, helping to prevent surging and maintaining optimal performance.

 

Anti-surge plate to increase surge margins (CFD verification) 

 

Verification of the front/rear balance of the pipe 

 

Improved turbine efficiency by reducing the air flow pressure with the chamber pipe 

•  The geometry of the 2-in-1 chamber pipe has been optimized to ensure consistent operating conditions for both the front and rear turbines. This improvement results in a more balanced flow and performance. In comparison to conventional HKS special piping kits, the flow discrepancy between the front and rear turbines has been reduced by an impressive 90%. 

 

⇒ More information 

https://www.hks-power.co.jp/product_db/intake/db/70029-AN001_EN.pdf