G Reddy Surge Tank / Intake Plenum For Nissan Skyline GT-R R32, R33, R34Maximises air supply to the engine Recommended for highly tuned applications 4.1 L collector tank capacity 90 mm single throttle body conversion Made in Japan G Reddy part no. : 13522307G Reddy Surge Tank Kit for Nissan RB26DETT Specifications Designed specifically for the RB26DETT engine in Nissan Skyline GT-Rs (R32, R33 and R34), this G Reddy kit delivers maximum performance from highly tuned engines. Its main feature is to convert the original 6 ITB (independant throttle bodies) system into a single-throttle body setup to deliver high power and mid-range torque. It comprises a 4.1-litre intake manifold and a large 90mm throttle body. Precision-welded and machined, the highly rigid plenum uses 3mm-thick aluminium to withstand high boost pressures, and features six individual, internal velocity stacks. The size of the primary runners has also been designed for optimum efficiency. The kit was tested on a Skyline R32 GT-R initially tuned to 958hp and 899Nm. Once the kit was installed, G Reddy noted an increase in performance throughout the rev range, resulting in 1023hp and 945Nm. Key Features 4.1-liter collector tank capacity (121% over factory ratio)Tuned internal velocity stacks on each runner CNC machined runners 90mm length, pipe diameter 58-45mm (tapered)Special O-ring style gasket for superior sealing for each runner Throttle-body hose diameter 100mm, internal butterfly diameter 90mm with low-profile throttle shaft Compatible with OEM AAC valve and TPS (Throttle Position Sensor)Please note : The single throttle configuration requires the use of a stand-alone ECU. A specific temperature sensor must also be installed. Kit Contents Surge tank 6 CNC primary runners Throttle body