Terra Firma Automotive presents the HKS Airflow Less Adapter for Nissan Skyline R32, R33, and R34 models equipped with RB20DET or RB25DET engines, engineered to optimize turbocharged intake performance. This adapter replaces the stock Air Flow Meter housing, a common restriction point in factory intake systems, allowing for smoother and higher-volume airflow. By reducing bottlenecks, it improves throttle response, turbo spool-up, and overall engine efficiency, with potential horsepower gains of 3–7 hp when combined with proper ECU tuning.
Constructed from precision-machined aluminum, the HKS Airflow Less Adapter offers durability, corrosion resistance, and a polished finish that integrates seamlessly with aftermarket intake piping and manifolds. The design also accommodates the relocation of the intake air temperature sensor, ensuring critical engine monitoring is maintained even without the stock AFM housing. Its lightweight, polished construction enhances airflow dynamics while maintaining reliability under high-boost conditions, making it ideal for enthusiasts running upgraded or standalone ECU systems such as the HKS F-CON V Pro or Apexi Power FC.
This adapter functions as a direct replacement in the intake tract between the air filter box and throttle body, enabling conversions from AFM to MAP-based intake monitoring. It is primarily suited for off-road, track, or race applications where emissions compliance may not be a concern, and ECU recalibration is expected. Terra Firma Automotive guarantees genuine HKS components, providing Skyline owners with a precision-engineered solution that enhances turbo response, intake efficiency, and overall engine performance for serious RB20DET and RB25DET builds.
- Buffed & Polished Aluminum Cast Unit
- Boss for IAT sensor (modification required)
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