Torque Solution TS-SU-870P-S Big Bore 76mm Throttle Body Adapter Silver

The Torque Solution TS-SU-870P-S is a high-performance big bore throttle body adapter designed for Subaru EJ engines equipped with big bore intake manifolds. This precision-engineered adapter allows enthusiasts to upgrade to a Toyota 76mm throttle body, delivering a 25% increase in throttle body size over the factory unit for improved airflow and performance on high-horsepower builds.

Construction and Design:

• CNC-machined from 6061 billet aluminum for exceptional strength and durability
• Silver anodized finish for corrosion resistance and a clean appearance
• Precision O-ring gaskets included for a secure, leak-free seal
• All necessary installation hardware included (bolts and rivets for motor transfer)

Performance Benefits:

• 76mm big bore design increases airflow by 25% compared to stock throttle body
• Ideal for high-horsepower builds targeting 600+ HP with upgraded turbochargers
• Improved throttle response and power delivery throughout the RPM range
• Compatible with front-mount intercooler setups

Important Installation Notes:

• Requires Toyota 76mm throttle body (part numbers 22030-0S010 or 22030-0F010, not included)
• OEM throttle body motor from compatible Subaru models must be transferred to the Toyota throttle body
• Aftermarket MAP sensor required and must be relocated to intake manifold or vacuum block
• Professional ECU tuning necessary to accommodate the larger throttle body and MAP sensor
• Front-mount intercooler with custom or modified piping may be required
• 3.5-inch transition coupler and clamps needed to connect to intercooler piping

This adapter is confirmed to fit Subaru STI OEM intake manifolds as well as aftermarket big bore manifolds from Torque Solution, Cosworth, and AMS. Designed for serious performance enthusiasts running aggressive turbo setups who demand maximum airflow and throttle response.