WRX / STI 75 MM Throttle Body Upgrade
Designed to work seamlessly with the factory idle control and TPS, this throttle body is built for 2004 and earlier WRX and STI models using Drive-by-Cable systems. Crafted from CNC-machined billet aluminum, its enlarged 75 mm bore increases throttle cross-sectional area by nearly 56% over stock, delivering noticeable horsepower gains and sharper engine response—even with factory intake pipes and turbo. The kit includes a stock manifold adapter plate, a 60 mm hose adapter for immediate OEM compatibility, a 75 mm hose adapter for larger piping setups, and all required mounting hardware. When combined with full 75 mm intake piping, it offers virtually unlimited performance potential, backed by exceptional build quality and a reliable warranty.
DETAILS:
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Designed for 2004 and earlier WRX/STI Drive-by-Cable models
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Retains OEM idle control and TPS
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Precision CNC-machined from billet aluminum
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75 mm bore flows 56% more air than stock
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Increases power and improves response
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Includes stock manifold adapter plate
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Comes with 60 mm and 75 mm hose adapters
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All mounting hardware supplied
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Compatible with full 75 mm intake piping
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Built to high-quality standards with warranty
Product Color Disclaimer
Due to variances in the anodizing stage of production that are beyond our control, actual color hue may be different than what is pictured and what has also been previously offered by Boomba Racing. We apologize for any inconvenience and we sincerely appreciate your understanding. For further clarification, feel free to contact us.
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