{"product_id":"b58-3-0t-catless-downpipe","title":"B58 3.0T Catless Downpipe","description":"The MST Performance catless downpipe directly replaces the restrictive factory unit on BMW and Toyota vehicles utilizing the B58 3.0T engine. Its primary function is to eliminate the catalytic converter, thereby promoting a freer flow of exhaust gases from the turbocharger. This reduction in back pressure allows the engine to operate more efficiently, leading to noticeable improvements in throttle response, a more aggressive exhaust note, and the potential for significant power gains, particularly when complemented by an ECU remap.\n\nThis downpipe is specifically engineered for OPF\/GPF-equipped models, addressing the flow restrictions imposed by these additional exhaust filters found in newer Euro 6d-compliant engines. Replacing the factory OPF\/GPF unit with this catless design represents one of the most impactful exhaust modifications available for these specific engines.\n\nThe MST Performance catless downpipe is compatible with a range of BMW and Toyota models featuring the B58 3.0T engine, including the BMW M340i, 540i, 640i Gran Turismo, 840i, Z4 M40i, and the Toyota GR Supra MK5 (A90). It is crucial to verify compatibility with your specific vehicle model and year using the provided lookup tools.\n\nWhile fitting a catless downpipe offers substantial exhaust flow improvements and can independently enhance throttle response and exhaust tone, a professional ECU tune is strongly advised. This is essential for maximizing performance benefits and avoiding potential check engine lights that may arise from the absence of catalyst sensors. It is important to note that this downpipe is intended for off-road and motorsport use only, as it does not comply with UK or EU emissions regulations and may lead to MOT failure or affect vehicle insurance if fitted to a road-legal vehicle.","brand":"BMW","offers":[{"title":"Default Title","offer_id":52687209627960,"sku":"MST-BW-5804DP","price":450.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660681132.jpg?v=1784881415","url":"https:\/\/store.motormia.co\/products\/b58-3-0t-catless-downpipe","provider":"MOTORMIA","version":"1.0","type":"link"}