HKS Airflow Less Adaptor GT-R - HKS1599-SN003

HKS Airflow Less Adaptor GT-R is an Air Flow Less Adaptor designed for 1989-2002 Nissan Skyline GT-R models (BNR32, BCNR33, BNR34) with the RB26DETT engine. This polished aluminum component deletes the factory mass airflow meter (MAF) to improve intake flow efficiency, requiring D-Jetro (MAP-based) engine management.

Features:

• Purpose: Replaces the restrictive factory airflow meter with a straight-through pipe.
• Material: Cast, buffed finish aluminum.
• Diameter: Approximately 70mm flange.
• Notes: Requires aftermarket ECU tuning (e.g., F-CON V Pro) as the stock ECU cannot operate without MAF sensors.
• Installation: Compatible with HKS Racing Suction Reloaded kits.

The part is designed for high-performance tuning, reducing suction resistance by removing the stock airflow sensor mesh and housing. Note that it is sold as a single unit, so two may be required for a full twin-turbo set-up.

Air flow meter is one of big suction resistance. It can be removed as D-Jetro and controlled with "F-CON V Pro". Performance is greatly improved when Racing Suction Reloaded is also installed. With "Air Flow Less Adapter", air flow meter can be easily removed. Buffing finished aluminum cast pipe can be replaced with air flow meter. There is a boss on the pipe to install intake air temperature sensor (Modification is required).