{"product_id":"dual-fuel-rail-billet-tumbler-delete-kit-subaru-01-07-wrx-sti-08-21-sti","title":"Dual Fuel Rail Billet Tumbler Delete Kit - Subaru 01-07 WRX\/STI \u0026 08-21 STI","description":"\u003cp\u003eThis bolt-on, integrated performance upgrade simultaneously solves the two most significant bottlenecks in the EJ-series intake system: air restriction and fuel supply.\u003c\/p\u003e\n\u003cp\u003eThis Dual Fuel Rail Tumbler Delete Kit, CNC machined from billet aluminium, replaces the restrictive factory assembly with precision-machined billet components, providing maximum airflow and guaranteed fuel delivery for high-boost applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBillet Tumbler Delete \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe factory Tumble Generator Valves (TGV, often referred to as tumblers) use butterfly valves in the intake runners that create severe restriction, especially at mid to high RPMs.\u003c\/p\u003e\n\u003cp\u003eOur Billet Tumbler Delete Kit eliminates this bottleneck entirely.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnrestricted Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCNC machined from Billet Aluminum to create a high-flow, smooth internal runner.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSignificant Power Gains\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy smoothing the path of air into the cylinder heads, you remove a major choke point, resulting in measurable increases in horsepower and torque across the entire rev range.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePrecision Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFeatures a smooth, radiused inlet and outlet profile, ensuring maximum laminar flow into the cylinder head ports.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Fuel Rails\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor serious power builders utilising upgraded turbos, injectors, and E85 or race fuels, the factory single-feed fuel system is inadequate. Our integrated Dual Fuel Rails solve fueling inconsistencies under high load:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eConsistent Fuel Pressure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe dual-rail design supports larger injectors and provides a reliable, uninterrupted flow of fuel, preventing fuel starvation issues common in highly tuned applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Volume Ready\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEssential for high-horsepower builds, ensuring your engine receives the precise volume of fuel required when running increased boost or alternative fuels (E85).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eIntegrated Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeamlessly engineered into the TGV Delete assembly, reducing complexity and potential failure points compared to separate rail and spacer kits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Compatibility\u003c\/strong\u003e\u003cbr\u003eSubaru WRX \u0026amp; STI (EJ20\/EJ25) 2001–2007 (GD Chassis)\u003cbr\u003eSubaru STI (EJ25) 2008–2021 (GR\/GV\/VA Chassis)\u003c\/p\u003e","brand":"Process West","offers":[{"title":"Silver","offer_id":51583561269527,"sku":"PWTD04T","price":1445.0,"currency_code":"AUD","in_stock":true},{"title":"Black","offer_id":51590796902679,"sku":"PWTD04TB","price":1520.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/0570\/1399\/files\/1_028dcb78-1235-417f-b280-73a1edfa7c5a.png?v=1763105616","url":"https:\/\/processwest.com.au\/products\/dual-fuel-rail-billet-tumbler-delete-kit-subaru-01-07-wrx-sti-08-21-sti","provider":"Process West","version":"1.0","type":"link"}