{"product_id":"arm-motorsports-bmw-335xi-catless-downpipes-n54-awd","title":"ARM Motorsports BMW 335XI CATLESS DOWNPIPES - N54 AWD","description":"\u003cp\u003e• Gain up to +25 whp \/ 37 wtq • Improved Exhaust Sound • 304 Stainless Steel Construction • Perfect Fitment for N54 AWD Platform ARM Motorsports N54 catless downpipes for BMW 335xi AWD models deliver measurable performance gains by eliminating restrictive OEM catalytic converters. The 3\" stainless steel design optimizes exhaust flow from the turbochargers, reducing back pressure and enabling Stage 2+ tune compatibility. Factory O2 sensor bungs allow ECU monitoring while catless operation requires an ECU tune or CEL fix. Engineered specifically for E90, E92, and E93 335xi AWD chassis with N54 3.0L engines. Includes hardware kit and new gaskets for seamless installation. Backed by ARM Motorsports lifetime warranty covering craftsmanship and fitment defects. Designed for off-road use only. ECU tuning required to prevent check engine light.\u003ca href=\"https:\/\/www.houseofapex.us\/\" title=\"House of Apex Website\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"IRL LLC","offers":[{"title":"Default Title","offer_id":53353794273644,"sku":"MS-4515-ARM-ARM M","price":297.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/4448\/0876\/files\/image_77c623d9-f686-49cf-a5a9-ecaf5ba68c1a.jpg?v=1773977024","url":"https:\/\/houseofapex.us\/products\/arm-motorsports-bmw-335xi-catless-downpipes-n54-awd","provider":"House of Apex","version":"1.0","type":"link"}