{"product_id":"mad-bmw-f-g-chassis-b46-downpipe-220-230-320-330-420-430-730-catted-mad-132","title":"MAD BMW F \u0026 G Chassis B46 Downpipe 220 230 320 330 420 430 730 Catted","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"156\" data-end=\"304\"\u003e\u003cstrong data-start=\"156\" data-end=\"304\"\u003eUpgrade from the stock B46 downpipe to the MAD B46 catted downpipe for maximum airflow, power, and sound.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"306\" data-end=\"697\"\u003eThe MAD BMW B46 catted downpipe is the perfect upgrade for getting more performance and a cleaner exhaust tone while keeping your setup street-friendly. The built-in high-flow catalytic converter reduces restriction compared to the factory cat, allowing your turbo to spool quicker and push more power. At the same time, it helps maintain drivability.\u003c\/p\u003e\n\u003cp data-start=\"699\" data-end=\"829\"\u003eOn a tuned BMW B46 with the stock turbo, you can expect gains of up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"770\" data-end=\"787\"\u003e30 horsepower\u003c\/strong\u003e, with even more on upgraded turbo setups.\u003c\/p\u003e\n\u003cp data-start=\"831\" data-end=\"949\"\u003eThe flex section helps reduce stress from engine movement and heat cycles, making it a long-lasting, reliable upgrade.\u003c\/p\u003e\n\u003cp data-start=\"951\" data-end=\"1068\"\u003e\u003cstrong data-start=\"951\" data-end=\"1068\"\u003eThis downpipe is designed specifically for U.S. B46 models and is not compatible with vehicles equipped with OPF.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1075\" data-end=\"1087\"\u003e\u003cstrong data-start=\"1075\" data-end=\"1087\"\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1089\" data-end=\"1515\"\u003e\n\u003cli data-start=\"1089\" data-end=\"1122\"\u003e\n\u003cp data-start=\"1091\" data-end=\"1122\"\u003eHigh-flow catalytic converter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1089\" data-end=\"1122\"\u003e\n\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\" data-pm-slice=\"1 1 []\"\u003eHigh-flow 200 cell catalytic converter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1159\" data-end=\"1224\"\u003e\n\u003cp data-start=\"1161\" data-end=\"1224\"\u003eCompatible with right-hand drive and left-hand drive vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1225\" data-end=\"1279\"\u003e\n\u003cp data-start=\"1227\" data-end=\"1279\"\u003eSmooth mandrel bends for maximum flow and no drone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1280\" data-end=\"1342\"\u003e\n\u003cp data-start=\"1282\" data-end=\"1342\"\u003eUp to 30HP gain on stock turbos, more with upgraded setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1343\" data-end=\"1380\"\u003e\n\u003cp data-start=\"1345\" data-end=\"1380\"\u003eFlex section for added durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1381\" data-end=\"1425\"\u003e\n\u003cp data-start=\"1383\" data-end=\"1425\"\u003eLifetime warranty on fitment and defects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1451\" data-end=\"1488\"\u003e\n\u003cp data-start=\"1453\" data-end=\"1488\"\u003eShips within 1 to 2 business days\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1489\" data-end=\"1515\"\u003e\n\u003cp data-start=\"1491\" data-end=\"1515\"\u003eDirect bolt-on fitment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1701\" data-end=\"1712\"\u003e\u003cstrong data-start=\"1701\" data-end=\"1709\"\u003eNote\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"1713\" data-end=\"1805\"\u003e\n\u003cli data-start=\"1713\" data-end=\"1754\"\u003e\n\u003cp data-start=\"1715\" data-end=\"1754\"\u003eU.S. model fitment only (B46 engines)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1755\" data-end=\"1805\"\u003e\n\u003cp data-start=\"1757\" data-end=\"1805\"\u003eNot compatible with vehicles equipped with OPF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"MAD","offers":[{"title":"Default Title","offer_id":50353498783937,"sku":"MAD-132","price":329.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0005\/7773\/2663\/files\/WhatsApp_Image_2025-07-10_at_11.49.19_fcb97aa6__06393.jpg?v=1782315057","url":"https:\/\/www.urotuning.com\/products\/mad-bmw-f-g-chassis-b46-downpipe-220-230-320-330-420-430-730-catted-mad-132","provider":"UroTuning","version":"1.0","type":"link"}