{"product_id":"astra-j-vxr-stage-1-remap-305-320hp-copy","title":"Astra J VXR Stage 2 Remap 320-335hp","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWP Stage 2 — Wayside Performance Custom ECU Calibration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eStage 2 is where we start opening up the Astra J VXR's intake and exhaust to remove the restrictions that limit what the A20NFT can do at higher boost levels.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe standard airbox and factory exhaust system are adequate at stock power, but once you're pushing beyond Stage 1 territory they become the bottleneck — and addressing them unlocks a meaningful step forward in both power and torque.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOur Stage 2 calibration is developed specifically around the improved airflow delivered by the supporting hardware.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis isn't a Stage 1 map with the numbers turned up — it's a completely custom rolling road calibration built around your car's specific setup, taking full advantage of the freer intake and exhaust to safely push the stock turbo further.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eExpect 320-335hp and 380-415ft\/lb of torque, with a broader power band and stronger in-gear punch than Stage 1 can deliver.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor the exhaust side, there are two effective routes and we're happy to supply and fit either:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe recommended option is a \u003cstrong\u003eCobra Sport 3\" primary sports cat downpipe\u003c\/strong\u003e paired with a \u003cstrong\u003esecondary decat pipe\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis removes the most restrictive part of the exhaust system while retaining a catalytic converter in the primary position — passing MOT emissions testing while delivering the vast majority of the flow improvement you'd get from a full decat setup.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor those who want the complete upgrade in one go, a \u003cstrong\u003eCobra Sport 3\" turbo-back exhaust\u003c\/strong\u003e replaces everything from the turbo outlet to the rear of the car. It includes a sports cat so it remains road-legal and MOT compliant, delivers a more aggressive exhaust note, and gives you the benefit of a full 3\" system throughout.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOn the intake side, the Airtec induction kit replaces the restrictive factory airbox with a large cone filter and heat shield, giving the turbo a much freer path to draw air and keeping intake temperatures in check at higher boost levels.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eYou can read more about the full Stage 2 setup and supporting modifications in our \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/www.wayside-performance.co.uk\/pages\/astra-j-vxr-tuning-guide\" target=\"_blank\" rel=\"noopener\"\u003eAstra J VXR Tuning Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEvery WP Stage 2 installation is carried out at our workshop by our experienced technicians and includes a before and after dyno run with a printed power graph.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eRequired hardware:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAirtec induction kit\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eCobra Sport 3\" primary sports cat downpipe + secondary decat pipe \u003cem\u003e(recommended road-legal option)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eOR Cobra Sport 3\" turbo-back exhaust system \u003cem\u003e(full upgrade option)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eAdvised hardware:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eUprated spark plugs (if not already fitted)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eForge Motorsport recirculation valve (if not already fitted)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003ePlease note this product is workshop install only including before and after dyno printout.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cem\u003e*FOR OPTIMAL RESULTS 99 RON FUEL IS REQUIRED (Shell V-Power or Tesco Momentum)*\u003c\/em\u003e\u003c\/p\u003e","brand":"Wayside Performance","offers":[{"title":"Default Title","offer_id":50920621965618,"sku":"WP-ASTRAJ-ST2","price":599.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1509\/8328\/files\/WPStage2_cd01cb1e-b749-4ad3-8d6e-0d8d9e6eb4fe.jpg?v=1771618892","url":"https:\/\/wayside-performance.co.uk\/products\/astra-j-vxr-stage-1-remap-305-320hp-copy","provider":"Wayside Performance ","version":"1.0","type":"link"}