{"type":"firestarter.listing","listing":{"id":"lst_Zo8bBn1s","product_name":"IE HPFP Upgrade Kit For Audi B9 S4, S5, SQ5 3.0T & RS5 2.9T","category":"Fuel Pump","description":"\n\n\n\n\n\nThe IE HPFP Internal Kit upgrades the high pressure fuel pump in your Audi B9 3.0T or 2.9T engine with the largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and our Stage 1/2 Plus ECU tunes. Manufactured with top-quality components and an industry-leading QC process to ensure extreme reliability. Increase your fueling overhead and enjoy worry-free HPFP operation for your 6-cylinder turbocharged engine.\n\n\n\n\n\n\n\nREQUIRED FLOW FORE85 & HYBRIDECU TUNES\n\n\n\n\n\n\nSTROKE VOLUME38.58%INCREASE OVER STOCK\n\n\n\n\n\n\nLARGEST POSSIBLE11.68MMPISTON DIAMETER\n\n\n\n\n\n\n\n\n\n\n\n\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\n\nHighest possible flow -safely run ethanol & hybrid turbo ECU tunes\n\n\nIn-house verified -Broken-in and bench tested on our pump dyno\nTool steel pin & cylinder -Extreme resistance to heat and abrasion\nDLC-coated pin -Low friction long-life coating\n\nNitrided cylinder -Increases hardness and wear resistance\n\n\nTitanium retainer -Ultra lightweight and high strength\n\nEngineered, designed, & manufactured in the USA\n\n\n\n\n\n\n\n\n\n\n\nADDED DISPLACEMENT\n\n\n\n\nYour HPFP is an integral part of the B9 3.0T & 2.9T platforms direct injection (DI) system and provides exceptionally high-pressure fuel (exceeding 2900psi) to the injectors. When running turbo upgrades or ethanol fuel, the stock HPFP internal volume becomes the limiting factor when increasing power. IE's HPFP internals install into your factory pump housing and increase the bore and piston size of the pump internals, adding more flow, delivering more fuel, and safely allowing for higher horsepower & torque output.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nFLOW TESTING\n\n\n\n\nIE HPFP Upgrade Internals offer the largest possible size within the B9 V6 pump body. The factory-installed 9.92mm internal pin has been enlarged to 11.68mm, increasing the stroke volume from 448mm^3 to 621mm^3. The result is a maximum gain of 38.58% more flow over stock!\n\n\n\n\n\n\n\n\n\n\nCUTTING-EDGE RELIABILITY\n\n\n\n\nEvery piston and cyli","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEHPFPInternalUpgradeKitForAudiB9S4S5SQ5IEFUVZ1_01_720x_e7504de2-38ed-4f73-8d9d-0bbb422edd4e.webp?v=1746044743","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEHPFPInternalUpgradeKitForAudiB9S4S5SQ5IEFUVZ1_02_720x_304b5c00-afbc-46bb-b42a-c9ea46314031.webp?v=1746044743","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEHPFPInternalUpgradeKitForAudiB9S4S5SQ5IEFUVZ1_03_720x_f1efa892-f0ba-43f3-b427-72e1b358ac5a.webp?v=1746044743","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IEHPFPInternalUpgradeKitForAudiB9S4S5SQ5IEFUVZ1_04_720x_90018d36-5858-4377-8d28-adc250b9c156.webp?v=1746044743"],"price":419.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:28.345Z"},"share_url":"https://firestarter.network/l/lst_Zo8bBn1s","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_Zo8bBn1s' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy IE HPFP Upgrade Kit For Audi B9 S4, S5, SQ5 3.0T & RS5 2.9T' and a budget_max comfortably above $419.99 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."]}}