{"title":"B58 Downpipe","description":"\u003ch2 dir=\"ltr\" bis_size='{\"x\":12,\"y\":9,\"w\":401,\"h\":29,\"abs_x\":782,\"abs_y\":214}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":9,\"w\":144,\"h\":28,\"abs_x\":782,\"abs_y\":214}'\u003eB58 Downpipe\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":49,\"w\":401,\"h\":176,\"abs_x\":782,\"abs_y\":254}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":49,\"w\":397,\"h\":136,\"abs_x\":782,\"abs_y\":254}'\u003eAcross BMW's whole turbocharged six-cylinder range, one upgrade comes up before any other: the downpipe. A B58 downpipe replaces the tightly restricted factory section behind the turbo with a free-flowing one, letting the engine breathe out properly and the turbo spin up sooner. It is the single most effective first bolt-on for this engine, which is why it anchors so many builds. To see how it fits a bigger plan, the wider \u003c\/span\u003e\u003ca href=\"https:\/\/tunepoint.eu\/collections\/b58\" bis_size='{\"x\":12,\"y\":167,\"w\":361,\"h\":38,\"abs_x\":782,\"abs_y\":372}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":167,\"w\":361,\"h\":38,\"abs_x\":782,\"abs_y\":372}'\u003eB58 performance parts\u003c\/span\u003e\u003c\/a\u003e\u003cspan bis_size='{\"x\":12,\"y\":186,\"w\":384,\"h\":38,\"abs_x\":782,\"abs_y\":391}'\u003e range lays out the intake, tune, and cooling that pair with it.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" bis_size='{\"x\":12,\"y\":241,\"w\":401,\"h\":22,\"abs_x\":782,\"abs_y\":446}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":241,\"w\":177,\"h\":22,\"abs_x\":782,\"abs_y\":446}'\u003eOne Engine, Many Cars\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":275,\"w\":401,\"h\":58,\"abs_x\":782,\"abs_y\":480}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":275,\"w\":377,\"h\":58,\"abs_x\":782,\"abs_y\":480}'\u003ePart of what makes the B58 such a rewarding platform is how widely BMW fitted it. The same basic engine turns up right across the line-up:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul bis_size='{\"x\":12,\"y\":350,\"w\":401,\"h\":126,\"abs_x\":782,\"abs_y\":555}'\u003e\n\u003cli dir=\"ltr\" bis_size='{\"x\":52,\"y\":350,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":555}'\u003e\n\u003cp dir=\"ltr\" role=\"presentation\" bis_size='{\"x\":52,\"y\":350,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":555}'\u003e\u003cspan bis_size='{\"x\":52,\"y\":350,\"w\":294,\"h\":19,\"abs_x\":822,\"abs_y\":555}'\u003eSaloons and coupes like the 340i, 440i, and 540i\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" bis_size='{\"x\":52,\"y\":385,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":590}'\u003e\n\u003cp dir=\"ltr\" role=\"presentation\" bis_size='{\"x\":52,\"y\":385,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":590}'\u003e\u003cspan bis_size='{\"x\":52,\"y\":385,\"w\":300,\"h\":19,\"abs_x\":822,\"abs_y\":590}'\u003eCompacts and hatches like the M140i and M240i\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" bis_size='{\"x\":52,\"y\":421,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":626}'\u003e\n\u003cp dir=\"ltr\" role=\"presentation\" bis_size='{\"x\":52,\"y\":421,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":626}'\u003e\u003cspan bis_size='{\"x\":52,\"y\":421,\"w\":240,\"h\":19,\"abs_x\":822,\"abs_y\":626}'\u003eSUVs such as the X3 M40i and X4 M40i\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" bis_size='{\"x\":52,\"y\":456,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":661}'\u003e\n\u003cp dir=\"ltr\" role=\"presentation\" bis_size='{\"x\":52,\"y\":456,\"w\":361,\"h\":19,\"abs_x\":822,\"abs_y\":661}'\u003e\u003cspan bis_size='{\"x\":52,\"y\":456,\"w\":315,\"h\":19,\"abs_x\":822,\"abs_y\":661}'\u003eOthers including the Z4 M40i and the Toyota Supra\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":492,\"w\":401,\"h\":78,\"abs_x\":782,\"abs_y\":697}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":492,\"w\":387,\"h\":77,\"abs_x\":782,\"abs_y\":697}'\u003eThat breadth means a huge, well-developed catalogue, though the exact BMW B58 downpipe still depends on your specific chassis, so always match it to your own car rather than to the engine alone.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" bis_size='{\"x\":12,\"y\":586,\"w\":401,\"h\":22,\"abs_x\":782,\"abs_y\":791}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":586,\"w\":169,\"h\":22,\"abs_x\":782,\"abs_y\":791}'\u003eWhy It Tops Every List\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":620,\"w\":401,\"h\":215,\"abs_x\":782,\"abs_y\":825}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":620,\"w\":399,\"h\":214,\"abs_x\":782,\"abs_y\":825}'\u003eAsk the B58 community where to start and the answer is close to unanimous. The downpipe B58 owners fit first frees the biggest early gain for the money, sharpening throttle response, waking the turbo, and adding a deeper, harder note from the straight-six. Because so many people have done it, the path is thoroughly proven, the fitment well documented, and help is easy to find, which takes much of the risk out of a first modification. It is also one of the few upgrades that pays back on almost every drive, since the sharper pickup and fuller sound are there whether you are pressing on or just pulling away from a junction, not only at full throttle on a track.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" bis_size='{\"x\":12,\"y\":851,\"w\":401,\"h\":22,\"abs_x\":782,\"abs_y\":1056}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":851,\"w\":104,\"h\":22,\"abs_x\":782,\"abs_y\":1056}'\u003eCat or Catless\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":885,\"w\":401,\"h\":156,\"abs_x\":782,\"abs_y\":1090}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":885,\"w\":399,\"h\":156,\"abs_x\":782,\"abs_y\":1090}'\u003eThe main decision is the catalytic converter. A catless pipe flows and sounds the most, but with no cat it is meant for off-road or track use where the law allows. A high-flow sport cat keeps a converter, staying road-legal in far more places and giving up only a little flow in return. Decide by where and how you actually drive, not by the loudest example you have heard, since it is a choice that is harder to reverse than it is to make well the first time.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" bis_size='{\"x\":12,\"y\":1058,\"w\":401,\"h\":22,\"abs_x\":782,\"abs_y\":1263}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":1058,\"w\":89,\"h\":22,\"abs_x\":782,\"abs_y\":1263}'\u003eBuying One\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\" bis_size='{\"x\":12,\"y\":1091,\"w\":401,\"h\":195,\"abs_x\":782,\"abs_y\":1296}'\u003e\u003cspan bis_size='{\"x\":12,\"y\":1091,\"w\":397,\"h\":195,\"abs_x\":782,\"abs_y\":1296}'\u003eWhen you look at a B58 downpipe for sale, a little care pays off. Confirm it is listed for your exact model and year, not merely the engine, and settle the catted or catless question up front. Check the material and build quality, whether it retains the factory sensors, and if a supporting tune is assumed as part of the deal. A downpipe bought right the first time is one you fit once and simply forget about. It is worth remembering that the biggest power gains only arrive once the software is set up to use the extra flow, so most owners budget for the pipe and a tune together rather than one without the other.\u003c\/span\u003e\u003cb id=\"docs-internal-guid-3817caad-7fff-c15e-6a6a-652774a22a7f\" bis_size='{\"x\":279,\"y\":1267,\"w\":0,\"h\":19,\"abs_x\":1049,\"abs_y\":1472}'\u003e\u003c\/b\u003e\u003c\/p\u003e","products":[{"product_id":"downpipe-b58-catless-bmw-f-series-wagner-tuning","title":"Downpipe B58 Catless – BMW F-Series | Wagner Tuning","description":"\u003cp\u003eRevolutionary Wagner Tuning Catless Downpipe Kit for BMW B58 Engine\u003c\/p\u003e\n\u003cp\u003eExperience improved turbo response, increased exhaust flow and enhanced driving dynamics with the Wagner Tuning Catless Downpipe Kit for BMW B58-powered vehicles.\u003c\/p\u003e\n\u003cp\u003eDeveloped for performance-oriented BMW enthusiasts, this high-flow downpipe helps reduce exhaust backpressure, improve turbo efficiency and unlock additional power potential.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e \u003cstrong\u003eTechnical Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- High-quality stainless steel construction for durability and corrosion resistance\u003cbr\u003e- Optimized 3.5” diameter design for maximum exhaust flow\u003cbr\u003e- Precision-engineered fitment for OEM-style installation\u003cbr\u003e- CAD-designed and flow-optimized construction\u003cbr\u003e- Integrated lambda sensor connections\u003cbr\u003e- Reduced thermal stress on the turbocharger\u003cbr\u003e- Improved throttle response and turbo spool\u003cbr\u003e- More aggressive and sporty exhaust sound\u003cbr\u003e- Motorsport-inspired catless configuration\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eMaximum Performance \u0026amp; Driving Experience\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe TunePoint-selected Wagner Tuning B58 Downpipe is designed to deliver improved exhaust gas flow and sharper engine response while maintaining excellent fitment quality.\u003c\/p\u003e\n\u003cp\u003eBy reducing backpressure, the system helps improve turbocharger efficiency and enhances overall driving performance for a more dynamic driving experience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with selected BMW B58 models:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- BMW M140i F20\/F21 2016–2018\u003cbr\u003e- BMW M240i F22\/F23 2016–2018\u003cbr\u003e- BMW 340i F30\/F31\/F34 2015–2018\u003cbr\u003e- BMW 440i F32\/F33\/F36 2015–2018\u003cbr\u003e- BMW 540i G30\/G31 2017–2018\u003cbr\u003e- BMW 640i GT G32 2017–2018\u003cbr\u003e- BMW 740i G11\/G12 2015–2018\u003cbr\u003e- BMW X3 M40i G01 2017–2018\u003cbr\u003e- BMW X4 M40i G02 2017–2018\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e Important Notes\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for non-OPF \/ non-GPF vehicles only\u003cbr\u003e- For off-road and motorsport use only\u003cbr\u003e- ECU tuning recommended for optimal performance\u003cbr\u003e- Professional installation recommended\u003cbr\u003e- May trigger catalyst-related warning lights without proper software tuning\u003cbr\u003e- Please check local emissions regulations before installation\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e \u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003eAvailable on request.\u003cbr\u003eEstimated EU delivery: 7–14 business days.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch6\u003e\u003cem\u003eDisclaimer\u003c\/em\u003e\u003c\/h6\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch6\u003e\u003cem\u003ePerformance downpipes are intended for motorsport and off-road applications only. TunePoint and the manufacturer are not responsible for improper installation, misuse, software-related issues or violations of local emissions regulations.\u003c\/em\u003e\u003c\/h6\u003e\n\u003ch6\u003e\u003cem\u003eCustomers are responsible for ensuring compatibility and legal use within their country or region.\u003c\/em\u003e\u003c\/h6\u003e","brand":"Wagner Tuning","offers":[{"title":"Default Title","offer_id":57246009655640,"sku":"TP-WAG-500001027-CATLESS","price":559.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/2440\/7128\/files\/500001027-01.jpg?v=1778140371"},{"product_id":"downpipe-kit-bmw-b58-200cpsi-eu6-f-series-wagner-tuning","title":"Downpipe Kit BMW B58 200CPSI EU6 – F-Series | Wagner Tuning","description":"\u003cp\u003e\u003cstrong\u003eHigh-performance downpipe kit developed for BMW B58 engines, designed to improve exhaust flow, reduce back pressure, and enhance overall driving performance.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis version includes a 200CPSI racing catalytic converter and is engineered for enthusiasts looking for increased response and improved sound while maintaining a high-quality motorsport-oriented setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e- High-quality SS304 stainless steel construction\u003cbr\u003e- Optimized 3.5\" design for improved exhaust flow\u003cbr\u003e- Reduced turbocharger back pressure\u003cbr\u003e- Improved throttle response and performance\u003cbr\u003e- CAD-developed flow-optimized structure\u003cbr\u003e- Direct replacement fitment\u003cbr\u003e- Integrated lambda sensor connections\u003cbr\u003e- Includes adapter for OEM connection\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Compatibility:\u003c\/strong\u003e\u003cbr\u003e- BMW F20\/F21 M140i 3.0L 2016–2018 (OPF models excluded)\u003cbr\u003e- BMW F22\/F23 M240i 3.0L 2016–2018 (OPF models excluded)\u003cbr\u003e- BMW F30\/F31\/F34 340i 3.0L 2015–2018 (OPF models excluded)\u003cbr\u003e- BMW F32\/F33\/F36 440i 3.0L 2015–2018 (OPF models excluded)\u003cbr\u003e- BMW G30\/G31 540i 3.0L 2017–2018 (OPF models excluded)\u003cbr\u003e- BMW G32 GT 640i 3.0L 2017–2018 (OPF models excluded)\u003cbr\u003e- BMW G12 740i 3.0L 2015–2018 (OPF models excluded)\u003cbr\u003e- BMW X3 G01 M40i 3.0L 2017–2018 (OPF models excluded)\u003cbr\u003e- BMW X4 G02 M40i 3.0L 2017–2018 (OPF models excluded)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003e- Suitable for vehicles without OPF\/GPF\u003cbr\u003e- Professional installation recommended\u003cbr\u003e- Motorsport\/performance use only\u003cbr\u003e- ECU tuning may trigger engine warning lights depending on vehicle setup\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAvailable on request.\u003c\/em\u003e\u003cbr\u003e\u003cem\u003eEstimated EU delivery: 7–14 business days.\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch6\u003e\u003cem\u003eDisclaimer\u003c\/em\u003e\u003c\/h6\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch6\u003e\u003cem\u003ePerformance downpipes are intended for motorsport and off-road applications only. TunePoint and the manufacturer are not responsible for improper installation, misuse, software-related issues or violations of local emissions regulations.\u003c\/em\u003e\u003c\/h6\u003e\n\u003ch6\u003e\u003cem\u003eCustomers are responsible for ensuring compatibility and legal use within their country or region.\u003c\/em\u003e\u003c\/h6\u003e","brand":"Wagner Tuning","offers":[{"title":"Default Title","offer_id":57246937874776,"sku":"TP-WG-B58-200CPSI","price":1159.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/2440\/7128\/files\/WhatsApp_Image_2026-05-07_at_13.09.40.jpg?v=1778152208"},{"product_id":"airtec-motorsport-de-cat-downpipe-for-bmw-b58-engine","title":"AIRTEC Motorsport De-Cat Downpipe for BMW B58 Engine","description":"\u003cp\u003eUpgrade your BMW B58 platform with the AIRTEC Motorsport De-Cat Downpipe — designed to improve exhaust flow, turbo response and overall engine performance.\u003cbr\u003eBy replacing the restrictive OEM catalytic downpipe, back pressure is significantly reduced, allowing the turbocharger to spool faster and improving throttle response, power delivery and exhaust sound.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eManufactured from high-quality stainless steel with smooth-flow bends and cast sections to maintain optimal diameter and airflow, this downpipe is suitable for both OEM and aftermarket exhaust systems.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eDeveloped by AIRTEC Motorsport in the UK for performance-oriented BMW B58 builds.\u003cbr\u003eFeatures: • High-flow de-cat downpipe for BMW B58 platform\u003cbr\u003e* Reduced exhaust back pressure\u003cbr\u003e* Faster turbo spool and improved throttle response\u003cbr\u003e* More aggressive exhaust sound\u003cbr\u003e* Stainless steel construction\u003cbr\u003e* Smooth bends for improved exhaust flow\u003cbr\u003e* Compatible with OEM and aftermarket exhaust systems\u003cbr\u003e* AIRTEC laser-cut plaque\u003cbr\u003e* Ideal for tuned and Stage 2 B58 setups\u003cbr\u003eFitment: • BMW M140i (F20\/F21)\u003cbr\u003e* BMW M240i (F22\/F23)\u003cbr\u003e* BMW 340i (F30\/F31)\u003cbr\u003e* BMW 440i (F32\/F33\/F36)\u003cbr\u003e* BMW 540i (G30\/G31\/G38)\u003cbr\u003e* BMW 640i GT (G32)\u003cbr\u003e* BMW 740i (G12)\u003cbr\u003e* BMW X3 M40i (G01)\u003cbr\u003e* BMW X4 M40i (G02)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eAn excellent upgrade for B58 owners looking for improved turbo response, increased performance and a more aggressive driving experience.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAvailable on request.\u003cbr\u003eEstimated EU delivery: 7–14 business days.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eThis product is intended for off-road, racing and motorsport use only.\u003cbr\u003eProfessional installation and tuning recommended.\u003cbr\u003eBuyer is responsible for checking local laws and vehicle compatibility before installation.\u003c\/strong\u003e\u003c\/h6\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Default Title","offer_id":57306077626712,"sku":"TP-AT-DAWPIPE-CAT-B58","price":590.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/2440\/7128\/files\/image_1_264f71d7-9162-4ca8-a253-3d12d6e6a355.jpg?v=1778920542"}],"url":"https:\/\/tunepoint.eu\/collections\/b58-downpipe.oembed","provider":"TunePoint Europe","version":"1.0","type":"link"}