{"product_id":"stone-exhaust-volvo-y555-y556-v40-t4-1-6t-cat-back-valvetronic-exhaust","title":"Stone Exhaust Volvo V40 T4 1.6T (2015+) Valved Cat-Back \/ Catback Sports Exhaust Y555\/Y556 – Switchable Valvetronic Back Box, OBD2\/OBDII Remote Plug \u0026 Play, No Drone, OPF\/GPF Delete Friendly – Performance Exhaust System OP501S","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eSwitchable Sports Exhaust for Volvo V40 T4 1.6 Turbo 2015 onwards - Y555 Y556 - Part No. OP501S\u003c\/h2\u003e\n\n  \u003cp\u003eTransform the character of your Volvo V40 T4 1.6 turbo with Stone Exhaust’s premium switchable rear section. This performance cat back system delivers a deep, refined soundtrack on demand, genuine gains proven on the dyno, and flawless factory-style fit. If you are searching for a V40 T4 1.6T sports exhaust upgrade, a remote controlled valved system, or a motorway friendly exhaust with no cabin boom, this is the standout choice.\u003c\/p\u003e\n\n  \u003cp\u003eDeveloped using 3D scanning and reverse engineering of the original equipment layout, the Stone Exhaust OP501S bolts straight on, integrates seamlessly via the OBD port, and gives you quiet or aggressive sound at the touch of a button. We run this system ourselves and our customers love the tone, the lack of resonance on long journeys, and the perfect alignment out of the box.\u003c\/p\u003e\n\n  \u003ch3\u003eHighlights that enthusiasts want\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDirect bolt-on for Volvo V40 T4 1.6 turbo petrol Y555 Y556 2015 onwards\u003c\/li\u003e\n    \u003cli\u003eSwitchable valve control for discreet commuting or full-blooded soundtrack when you want it\u003c\/li\u003e\n    \u003cli\u003eOBD2 plug-in controller and wireless remote for fast, clean installation with no splicing\u003c\/li\u003e\n    \u003cli\u003eON, OFF and AUTO modes with RPM-based actuation for intelligent sound management\u003c\/li\u003e\n    \u003cli\u003eNo motorway resonance and no droning in the cabin\u003c\/li\u003e\n    \u003cli\u003eReverse engineered from the OE system for true OEM-style fit and finish\u003c\/li\u003e\n    \u003cli\u003eDyno developed for real-world performance improvements in power and response\u003c\/li\u003e\n    \u003cli\u003eOne-piece architecture for strength, simple alignment and long-term durability\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSound control via OBD plug-in remote\u003c\/h3\u003e\n  \u003cp\u003eChoose your soundtrack in seconds:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eON - valves open for maximum flow and a richer, more purposeful tone\u003c\/li\u003e\n    \u003cli\u003eOFF - valves closed for near-stock civility on early starts and long drives\u003c\/li\u003e\n    \u003cli\u003eAUTO - automatic opening at a preset engine speed for the best of both\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eThe OBDII controller is genuinely plug and play. No complicated wiring. No coding.\u003c\/p\u003e\n\n  \u003ch3\u003eEngineering that delivers\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eComprehensive R\u0026amp;D with 3D scanning of the factory system for precise routing\u003c\/li\u003e\n    \u003cli\u003e7-axis CNC bending achieving up to 98 percent roundness for excellent gas flow\u003c\/li\u003e\n    \u003cli\u003eTight manufacturing tolerance under 0.025 mm for consistent, repeatable quality\u003c\/li\u003e\n    \u003cli\u003eCrisscross and overlapping weld techniques to handle prolonged high temperatures\u003c\/li\u003e\n    \u003cli\u003eDirect spot welds by mechanical welding arms for strength and a clean look\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eOPF and GPF friendly\u003c\/h3\u003e\n  \u003cp\u003eRunning a V40 with an OPF or GPF particulate filter Y555 Y556 platform cars? An OPF delete solution is available at no extra charge, allowing installation without warning lights. No ECU coding required.\u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVehicle: Volvo V40 T4 1.6 turbo petrol Y555 Y556\u003c\/li\u003e\n    \u003cli\u003eModel years: 2015 onwards\u003c\/li\u003e\n    \u003cli\u003eEngine: 1.6T\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation and fitting\u003c\/h3\u003e\n  \u003cp\u003eThis cat back is a straightforward fit with an easy plug-in OBD controller. For the best results and alignment we recommend professional installation.\u003c\/p\u003e\n  \u003cp\u003ePrefer us to fit it for you? MJ Modifications offers in-house fitting in Warwickshire. Request a fitting quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eOP501S\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003ch3\u003eManufacturer and warranty\u003c\/h3\u003e\n  \u003cp\u003eBrand: Stone Exhaust\u003c\/p\u003e\n  \u003cp\u003eWarranty: 2 years from Stone Exhaust\u003c\/p\u003e\n\n  \u003ch3\u003eWhy owners pick this V40 upgrade\u003c\/h3\u003e\n  \u003cp\u003eDeep, sporty tone without motorway boom. Instant switch between quiet and loud. Real performance gains from a system that fits like stock. Feedback from our customers mirrors our own experience - this is the V40 T4 1.6T exhaust upgrade that nails sound, quality and value in one package.\u003c\/p\u003e\n\n  \u003cdiv style=\"margin-top: 18px;\"\u003e\u003c\/div\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" alt=\"3D scanning and reverse engineering for Volvo V40 T4 1.6T performance exhaust\" style=\"max-width: 100%; height: auto; margin: 10px 0;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" alt=\"7-axis CNC bending for Volvo V40 T4 1.6T sports exhaust system\" style=\"max-width: 100%; height: auto; margin: 10px 0;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_1024x1024.jpg?v=1572828150\" alt=\"Precision welding on Volvo V40 T4 1.6T cat back\" style=\"max-width: 100%; height: auto; margin: 10px 0;\"\u003e\n\n  \u003cdiv style=\"margin-top: 6px;\"\u003e\u003c\/div\u003e\n  \u003cp style=\"font-size: 0.95em; color: #555;\"\u003eSearch terms customers use: Volvo V40 T4 1.6 turbo sports exhaust, V40 1.6T valved exhaust, remote controlled exhaust Volvo V40, plug in OBD valve controller, V40 back box upgrade, non drone exhaust Volvo V40, Y555 Y556 cat back, OPF delete compatible, GPF friendly exhaust, stone exhaust OP501S.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Flat Cut Gloss Carbon Fiber (102mm)","offer_id":56006646890882,"sku":null,"price":2270.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/1020CG_FlatCutGlossCarbonFibre_102mm_1946x_68066559-62fe-4d9e-8f51-8df8233bada6.png?v=1764059672","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-volvo-y555-y556-v40-t4-1-6t-cat-back-valvetronic-exhaust","provider":"MJ Modifications","version":"1.0","type":"link"}