{"product_id":"bmw-s58-high-flow-catted-downpipes-yonristic-performance","title":"BMW S58 High-Flow Catted Downpipes - Yonristic Performance","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cb id=\"docs-internal-guid-585daa74-7fff-79da-f32b-794270e7ad97\"\u003eProduct Description\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe BMW S58 engine is one of the most capable modern twin-turbo inline-six engines on the market, powering platforms such as the G80 M3, G82\/G83 M4, G87 M2, and other S58-based BMW M models. From the factory, however, the downpipes are one of the most restrictive sections of the exhaust system. Positioned directly after the turbochargers, the factory catalyst assemblies are designed around emissions compliance, noise control, and global regulations rather than maximum exhaust flow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Yonristic Performance High-Flow Catted Downpipes are designed to improve that critical section of the exhaust path. By replacing the factory catalyst assemblies with a freer-flowing catted design, the system reduces backpressure immediately after the turbochargers. This allows the turbos to spool more efficiently, improves throttle response, and gives the S58 a stronger, cleaner, and more aggressive exhaust character.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUnlike fully catless downpipes, these downpipes retain catalytic converters, making them a more balanced choice for owners who want improved performance without the rawness, smell, and extreme volume of a catless setup. The system is available in two catalyst-density options depending on the customer’s goals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cspan\u003e200-cell version\u003c\/span\u003e\u003cspan\u003e is the more aggressive option. It offers greater flow potential, louder sound, sharper turbo response, and stronger performance support for tuned vehicles. This option is ideal for owners looking for a more noticeable upgrade in both sound and performance while still retaining a catalytic core.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cspan\u003e400-cell version\u003c\/span\u003e\u003cspan\u003e is the more refined option. It offers improved flow over factory while maintaining a more controlled tone and a more daily-friendly character. For owners who want a cleaner upgrade, reduced harshness, and a more OEM-plus driving experience, the 400-cell option provides an excellent balance between flow, refinement, and drivability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth versions are fully wrapped in heat shielding. On the S58 platform, thermal control is extremely important because the downpipes sit in a high-temperature turbocharged environment. The heat shielding helps reduce radiant heat around the engine bay and surrounding components while helping maintain exhaust gas energy through the downpipe path. This contributes to consistent performance during repeated acceleration, high-load driving, and tuned applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe sound improvement is immediately noticeable. Compared with the factory downpipes, the Yonristic high-flow catted design gives the S58 a deeper idle, sharper turbo character, and a more aggressive tone under throttle. When paired with a performance midpipe or catback exhaust, the downpipes help unlock a more open and motorsport-inspired sound while still keeping the system more controlled than a fully catless setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEach set is built with precision fitment in mind. The downpipes are engineered to align with factory turbo outlets, factory-style mounting points, and downstream exhaust connections. Smooth internal transitions help maintain exhaust velocity, while hand TIG-welded construction provides strength, durability, and a clean premium finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese downpipes are the ideal first step for S58 owners looking to unlock more sound, more response, and more performance potential from their M car without committing to a full catless race setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003e200-Cell vs 400-Cell Options\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e200-Cell High-Flow Cats\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 200-cell configuration is designed for maximum flow while still retaining catalytic converters. With a lower cell density, exhaust gases can pass through more freely compared with factory catalysts, reducing restriction and improving turbocharger efficiency. This version provides the strongest sound increase, the most aggressive exhaust character, and the highest performance potential of the two catted options.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 200-cell version is best for owners who plan to tune the vehicle, install a performance midpipe or catback, or want the S58 to feel more responsive and aggressive under load. Because of the increased flow and reduced catalyst density, ECU tuning is recommended for best performance and to properly manage catalyst-related monitoring.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e400-Cell High-Flow Cats\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 400-cell configuration is designed for customers who want an upgraded catted downpipe with a more refined and daily-friendly character. It still improves flow over the factory downpipes, but the higher cell density provides a more controlled sound profile and a cleaner overall driving experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 400-cell version is ideal for owners who want better sound and improved response while keeping the car more comfortable for street use. It is the better option for those who want a balanced upgrade with less odor, less rawness, and a more OEM-plus personality compared with the 200-cell version.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eThree Unique Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHigh-Flow Catted Performance Design\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Yonristic S58 High-Flow Catted Downpipes are designed to reduce restriction directly after the turbochargers while retaining catalytic functionality. By improving exhaust gas evacuation from the turbo outlets, the system helps the S58 spool more efficiently, respond faster to throttle input, and deliver a more aggressive exhaust tone. The result is a performance-focused upgrade that feels sharper and more responsive without moving into a fully catless configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e200-Cell and 400-Cell Configuration Options\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNot every build needs the same downpipe. The 200-cell option is built for customers who want the strongest flow, loudest tone, and most aggressive performance character while still retaining catalytic cores. The 400-cell option is built for customers who want a more refined, daily-friendly setup with improved flow and a cleaner overall sound profile. This gives owners the flexibility to choose the correct balance between performance, sound, and drivability.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFull Heat-Shielded Construction\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEvery set comes fully wrapped in heat shielding for thermal protection. This helps reduce radiant heat around the turbocharger and engine bay area, protects surrounding components, and helps maintain consistent performance during spirited driving. The heat shielding also gives the downpipes a more premium motorsport appearance while serving a functional purpose on the high-temperature S58 platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePerformance Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Yonristic S58 High-Flow Catted Downpipes are designed to improve:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eTurbo spool response\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eThrottle sensitivity\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eExhaust flow efficiency\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eMid-range torque delivery\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eHigh-RPM breathing\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eExhaust volume and tone\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eTurbo sound presence\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003ePerformance potential with ECU tuning\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eHeat control around the downpipe area\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEstimated gains will vary depending on vehicle, tune, fuel, exhaust setup, and catalyst option.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEstimated Gains\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e200-Cell Version:\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e+25 – 40 HP\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e+25 – 45 lb-ft Torque\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e400-Cell Version:\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e+15 – 30 HP\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e+15 – 30 lb-ft Torque\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePerformance gains may increase when paired with ECU tuning, upgraded midpipes, intake upgrades, or a full catback exhaust system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTuning \u0026amp; Check Engine Light Notice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBecause these downpipes change the factory catalyst flow and efficiency behavior, a check engine light may occur depending on the vehicle’s ECU software, catalyst option, and driving conditions. ECU tuning is recommended for best performance, drivability, and long-term reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 400-cell version is generally the more conservative and daily-friendly option, while the 200-cell version is designed for higher performance and more aggressive sound. Neither version should be advertised as guaranteed no-CEL unless verified on the specific vehicle and software version.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCustomers are responsible for checking local emissions laws before purchase or installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eHigh-flow catted downpipe system\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEngine Platform\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBMW S58 3.0L twin-turbo inline-six\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCatalyst Options\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e200-cell high-flow catalytic converters\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e400-cell high-flow catalytic converters\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThermal Protection\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eFull heat-shield wrapped construction\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eDesigned to reduce radiant heat\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eDesigned to protect surrounding components\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eConstruction\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003ePrecision-formed tubing\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eSmooth internal transitions\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eHand TIG-welded assembly\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eHigh-temperature turbocharged application design\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSound Character\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eDeeper idle tone\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eSharper turbo sound\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eMore aggressive acceleration note\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eMore open exhaust character compared with factory downpipes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eDirect replacement design\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eCompatible with factory turbo outlets\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eDesigned for factory-style mounting points\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eProfessional installation recommended\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBMW G80 M3 — 2021+\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBMW G81 M3 Touring — 2022+\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBMW G82 M4 — 2021+\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBMW G83 M4 Convertible — 2021+\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBMW G87 M2 — 2023+\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEngine: \u003c\/span\u003e\u003cspan\u003eS58 3.0L Twin-Turbo Inline-Six\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFitment for F97 X3 M \/ F98 X4 M and other S58-powered vehicles may require a separate chassis-specific version. Please confirm vehicle model, year, and chassis before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eOff-Road Use Disclaimer\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis product is intended for \u003c\/span\u003e\u003cspan\u003eoff-road and track use only\u003c\/span\u003e\u003cspan\u003e. The Yonristic Performance S58 High-Flow Catted Downpipes are designed for maximum exhaust flow, improved turbo response, and enhanced performance sound. Because this product modifies the factory emissions-related exhaust system, it may not be legal for street use in certain states, regions, or countries.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInstallation and use of this product may affect emissions compliance and may not pass local emissions inspections. Customers are responsible for checking and following all local, state, and federal regulations before purchasing, installing, or using this product.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYonristic Performance does not guarantee emissions compliance, inspection approval, or road legality for this product. This system is built strictly for motorsport, off-road, and competition use where permitted.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Yonristic Performance","offers":[{"title":"200 Cells","offer_id":53751721885920,"sku":"YR-9277-BMW-200","price":959.0,"currency_code":"USD","in_stock":true},{"title":"400 Cells","offer_id":53751721918688,"sku":"YR-6945-BMW-400","price":1459.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/2430\/files\/72.png?v=1785433601","url":"https:\/\/www.edoperformance.com\/products\/bmw-s58-high-flow-catted-downpipes-yonristic-performance","provider":"EDO Performance","version":"1.0","type":"link"}