{"product_id":"high-flow-cats-downpipe-set","title":"High-Flow Cats Downpipe Set","description":"The CTS Turbo High-Flow Cats Downpipe Set is engineered to replace the restrictive factory catalytic converters in BMW F90 M5\/M5C and F91\/F92\/F93 M8 vehicles equipped with the S63 4.4 Twin Turbo engine. The construction features cast T304 stainless steel, meticulously hand TIG welded and back-purged to ensure a long lifespan and reliable performance.\n\nBeyond performance, this downpipe set significantly enhances the auditory experience of your vehicle. It produces a louder, deeper growl with more pronounced exhaust 'crackle' on downshifts and a confident 'punch' during upshifts, especially when paired with the factory exhaust system. The sound becomes even more aggressive if an aftermarket exhaust is already installed. The piping measures 80mm (3.15 inches) in diameter, and each catalytic converter is a 200-cell sport unit, measuring 110mm OD x 90mm Long (4.33\" OD x 3.54\" Long).\n\n**Important Fitment and Usage Notes:**\nThis product is explicitly designed for the following models: 2018-2021 F90 BMW M5, 2018-2021 F90 BMW M5 Competition, and 2020-2021 F91\/F92\/F93 M8.\n\n**Post-Installation Requirements:** To prevent a Check Engine Light (CEL) from occurring, proper stage 2 tuning software must be used after installation.\n\n**California Emissions Note:** This product is not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.","brand":"CTS Turbo","offers":[{"title":"Default Title","offer_id":52687537996088,"sku":"CTS-EXH-DP-0042","price":899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/662651982.webp?v=1784884974","url":"https:\/\/store.motormia.co\/products\/high-flow-cats-downpipe-set","provider":"MOTORMIA","version":"1.0","type":"link"}