{"type":"firestarter.listing","listing":{"id":"lst__A6he8MU","product_name":"IE HPFP Upgrade Kit For Audi C7/C7.5 4.0TT S6, S7, & RS7","category":"Fuel Pump","description":"\n\n\n\n\n\n\n\n\nOur premium HPFP internals kit for your Audi 4.0TT V8 engine upgrades both factory high-pressure fuel pumps with performance high-flow internals. Leading-quality components and strict QC process will reliably increase the fuel delivery from your stock fuel system with a set of 11.67mm pistons providing additional fuel support for larger turbos and ethanol fuel.\n\n\n\n\n\n\n\nDESIGNED & MACHINEDIN THE USAIN-HOUSE PRECISION\n\n\n\n\n\n\nTWO UPGRADEDINTERNAL KITSFOR STOCK PUMPS\n\n\n\n\n\n\nHIGH-PRESSUREHYBRID TURBOFUELING SUPPORT\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nLEADING FEATURES\n\n\n\n\n\nTwo sets of HPFP internal kits to upgrade your stock pumps\nReliably adds a larger fuel ceiling for increased flow\nPiston diameters increased to 11.67mm\nLargest stroke volume available\nBroken-in and bench tested on in-house pump dyno\nConstant diameter piston design for long-life operation\nRetains OE spring & retainer to avoid increased camshaft wear\nTool steel DLC coated pin\nNitrided tool steel cylinder\nMolybdenum disulphide impregnated leak-free seal\nStainless steel seal body\nBuna-N rubber oil resistant o ring\nIndividually tested and verified for extreme tolerances\n\n\n\n\n\n\n\n\n\n\n\nADDED DISPLACEMENT\n\n\n\n\nThe 4.0TT's high-pressure fuel pumps supply high-pressure fuel (exceeding 2900psi each) to the direct-injeciton fuel system injectors. When running turbo upgrades, especially with ethanol fuel blends, the stock HPFPs internal volumes become a limiting factor when increasing power. IE's HPFP internals install into your factory pump housings and increase the bore and piston size of the pump internals, allowing more flow, delivering more fuel, and allowing for more horsepower & torque from your hardware and tuning upgrades.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nFLOW TESTING\n\n\n\n\nFlow testing was performed to measure the increase in flow rate which produced a maximum result of 38.58% gain over stock!\n\n\n\n\n\n\n\n\n\n\nRELIABILITY\n\n\n\n\nEvery piston and cylinder is CNC machined to exacting sizes, assembled, and measured as a matching set in-house","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEC7S6S7HPFPInternalUpgradeKitIEFUVP1_01_720x_b2d3f1a9-a5af-41ed-b350-5810961322a4.webp?v=1746046040","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEC7S6S7HPFPInternalUpgradeKitIEFUVP1_02_720x_2bb4a998-481c-442a-97d5-7a834deb4b17.webp?v=1746046040"],"price":839.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:28.316Z"},"share_url":"https://firestarter.network/l/lst__A6he8MU","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer ","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst__A6he8MU' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy IE HPFP Upgrade Kit For Audi C7/C7.5 4.0TT S6, S7, & RS7' and a budget_max comfortably above $839.99 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}