{"product_id":"3-0l-tfsi-turbo-downpipe","title":"3.0L TFSI Turbo Downpipe","description":"The Redstar Exhaust downpipe offers a significant performance enhancement for 2017+ Audi S4 and S5 B9\/B9.5 3.0T vehicles. By utilizing a large-bore layout with smooth, flow-optimized transitions, it effectively reduces exhaust backpressure to achieve faster turbo spool-up, improved throttle response, and a more aggressive exhaust note while helping to lower under-hood temperatures.\n\nEach unit is built from premium 304L stainless steel with a 2.0mm wall thickness, 100% TIG-welded and back-purged for structural integrity. The design incorporates OEM-spec V-band flanges and retains all factory brackets and mounts, ensuring a 100% bolt-on installation.\n\nECU tuning is highly recommended to ensure optimal performance and proper engine calibration; the manufacturer specifically suggests consulting with Purisic Performance. Optional hardware includes GESI GEN2 400cpsi catalytic converters, OE-style heat shielding with ceramic inner liners, and tunable O2 sensor spacers to help prevent engine light conditions.\n\nPlease note that this product is for off-road and motorsport use only.","brand":"Redstar Exhaust","offers":[{"title":"Default Title","offer_id":52865941373240,"sku":"RS.B9S4.B9S5.DP","price":480.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687605187.jpg?v=1787905741","url":"https:\/\/store.motormia.co\/products\/3-0l-tfsi-turbo-downpipe","provider":"MOTORMIA","version":"1.0","type":"link"}