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Introducing our Turner Performance Cat-Back Exhaust for your G20 M340! Precision-crafted exhaust that elevates your driving experience with a new level of excitement. Designed with our commitment to performance and quality, this exhaust is meticulously engineered to unleash the true potential of your M340. In tandem with performance and sound, our cat-back exhaust enhances the visual aesthetic with upgraded quad exit exhaust tips that complement the overall motorsport nature of the M340 and replace the fake factory exhaust tips. Upgrade your driving experience with our cat-back exhaust for your M340! Unleash the power, bask in the glorious sound, and turn heads wherever you go.
Using our signature design principles this exhaust is crafted to deliver a deep, authoritative tone that reveals the true rowdy attitude of the M340. Designed to utilize the factory valve control our cat-back provides an exhilarating sound during acceleration without compromising the daily driving amenities. Our exhaust is manufactured of 1.25mm wall T304 stainless steel for superior durability, corrosion resistance, and aesthetics. Designed with the customer in mind it features a straightforward bolt-on installation utilizing factory slip joints and mounting locations and includes are clamps and hardware necessary for installation.
Upgrading the sound:
Our exhaust allows you to turn up the volume and let the B58TU boast its smooth and hearty exhaust tone. Let's be honest, what's the point of owning a B58 if you're not going to upgrade the exhaust? Our signature muffler design allows you to transfer the exhaust valve from your factory system directly onto your new Turner system. The Turner exhaust signature muffler design allows for two flow paths that change both tone and volume. With the vehicle in eco or comfort mode, the valves remain closed, with the closed valves the exhaust system allows the gasses to flow through the muffler toning down the volume and giving a more refined exhaust note. While in driving modes sport or sport+ the valve opens and the flow path changes to a "straight flow path" essentially turning into a straight-piped exhaust for the least amount of restriction and the most amount of B58 sound!
Upgraded aesthetics:
From the factory, the G chassis comes equipped with fake or imitation exhaust tips, our Turner exhaust allows you to remove the imitation tips from the vehicle and sport a set of 4 true exhaust tips giving that upgraded motorsport styling.
How the cat-back is designed:
To create a cat-back exhaust for this incredible vehicle the upgrade happens right at the downpipe. We replaced the factory components with our full 3.0" T304 stainless steel piping. The true 3.0" exhaust makes its way through the center and rear of the car without the center muffler or resonator to keep the flow to a maximum! With smooth mandrel bent transitions our exhaust passes perfectly under the rear subframe for a factory equivalent fit. Positioned in the rear of the car is our signature B58 muffler with beautiful inlet and outlet piping that creates the perfect exhaust tuning. Featuring relief cut slip joints and fabricated sheet metal brackets the exhaust can be fully adjusted and mounted seamlessly in the factory locations. Quad 3.5" exhaust tips are optioned to fill out the open space in the rear diffuser and complete the rear profile of the vehicle.
Features and Benefits:
Street/Motorsport inspiration
Controlled by factory valves
Compatible with factory and aftermarket downpipes (80mm)
Quad exit with true exhaust tips to replace factory facia
19 lb weight savings (Factory - 65lbs, Turner 46lbs)
Part Design:
Turner In-house designed and engineered using FARO ARM laser scanning technology and SolidWorks 3D CAD modeling for precision fitment.
T304 Stainless Material in a natural finish - 1.25mm wall thickness, back purged and TIG-welded throughout
Full 3.0" Stainless Steel Mandrel Bent Tubing
T304 Stainless Steel 12mm barbed exhaust hangers Tig-Welded in OE locations for precise fitment.
Strategically placed slip joints provide the most adjustability to obtain perfect fitment
Kit Contents:
3.0" front exhaust section (80mm flange to connect to factory and aftermarket downpipes)
Full 3.0" lightweight free-flowing midsection for better sound, performance, and weight savings.
Valved Rear muffler
Valve extension harness
Clamps and Hardware for an OEM+ install
Optional 3.5" Exhaust Tips
Product Development:
Our G Chassis B58 Valved Catback was designed, engineered, tested, and quality inspected by our Research and Development team at Turner. Nothing but the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.
Turner's Cat-Back Exhaust is meticulously engineered to deliver a rich, resonant exhaust note that transforms the character of your M340i. Utilizing the factory exhaust valve, this system lets you tailor the sound based on your drive mode—keeping things refined in Comfort mode, and unleashing a bold, free-flowing tone in Sport mode. The 3.0” T304 stainless steel construction ensures durability and rust resistance, while providing a significant 19-pound weight reduction from the factory exhaust.
Paired with Turner's signature straight-through muffler design, this cat-back maximizes airflow and minimizes back pressure, yielding both a performance boost and a thunderous tone when you hit the throttle.
Bold Aesthetics: Real Quad Tips & Gloss Black Diffuser
Factory-fitted faux tips don’t do the M340i justice. Turner's Cat-Back Exhaust replaces those with genuine quad 3.5" brushed stainless steel tips, delivering a genuine motorsport look. Complementing this upgrade, the included Gloss Black Diffuser offers a sleek, aggressive appearance, expertly crafted to fit perfectly and accommodate tips up to 4 inches.
Valved Performance: Adaptive valve control through factory modes for customizable sound levels Durable Build: 3.0” T304 stainless steel tubing, TIG-welded with precision, for long-lasting performance True Quad Exit: Brushed stainless steel tips, eliminating faux factory look Weight Savings: 19 lbs lighter than stock (factory system: 65 lbs; Turner exhaust: 46 lbs) Kit Includes:
3.0" front exhaust section with 80mm downpipe flange (compatible with factory and aftermarket downpipes) Free-flowing midsection and valved rear muffler for superior sound and reduced weight Quad 3.5" brushed stainless steel exhaust tips Valve extension harness, clamps, and hardware for seamless installation Turner Motorsport Gloss Black Rear Diffuser
Turner’s Gloss Black Diffuser provides a perfect OEM+ aesthetic to showcase the true exhaust upgrades on your M340i. Made from UV-stabilized ABS polymer, it’s designed to withstand the elements while adding a sporty, aggressive look. It’s engineered for precise fitment using factory mounting points, requiring no cutting or modification.
Precision Fitment: CAD-modeled and laser-scanned for perfect alignment OEM+ Styling: Complements the G20's lines with an upgraded motorsport feel Effortless Installation: Secure fitment with factory mounting locations; no drilling needed Compatible with Aftermarket Exhausts: Accommodates tips up to 4 inches Why Choose Turner Motorsport?
Turner Motorsport combines cutting-edge engineering with a deep commitment to quality. This cat-back exhaust system is designed and developed in-house to meet the needs of drivers who demand performance without compromise.
Make every drive an unforgettable experience with the Turner Motorsport G20 M340i Valved Cat-Back Exhaust and Gloss Black Diffuser. The sound, style, and performance upgrades you’ve been looking for are finally here—along with an exclusive offer to complete your setup.
Sound Clips! Featured on the ECS YouTube Channel HERE:
G20 M340i Performance Valved Cat-Back Exhaust
Presenting the Turner Motorsport Performance Cat-Back Exhaust, tailor-made for your M340. Immerse yourself in an enhanced driving adventure as this meticulously engineered exhaust takes your B58-equipped car to exhilarating new heights. With an unwavering commitment to performance and quality, the Turner exhaust is crafted to unlock the full potential of your M340.
Experience a symphony of performance and sound, coupled with a visual upgrade through the quad exit exhaust tips that not only amplify the motorsport essence of the M340 but also replace the stock faux exhaust tips. Elevate your driving encounters with the Turner Motorsport cat-back exhaust - unleash the power, reveal the glorious sound, and capture attention wherever you go.
Incorporating their distinctive design principles, this exhaust produces a commanding, deep tone, revealing the bold personality of the M340. Leveraging the factory valve control, the Turner cat-back ensures an exciting sound during acceleration, seamlessly blending the high-performance sound with daily driving convenience. Crafted from 1.25mm wall T304 stainless steel, Turner's exhaust boasts superior durability, corrosion resistance, and aesthetic appeal.
Designed with the customer in mind, the installation is a breeze, featuring a straightforward bolt-on process using factory slip joints and mounting locations. Your exhaust system includes all the necessary clamps and hardware for a hassle-free installation. Upgrade your M340 with the Turner Motorsport cat-back and let every drive become a statement of power and style.
Sound clips! Featured on the ECS Tuning YouTube channel:
Upgrading the sound:
This exhaust allows you to turn up the volume and let the B58TU boast its smooth and hearty exhaust tone. Let's be honest, what's the point of owning a B58 if you're not going to upgrade the exhaust? Turner's signature muffler design allows you to transfer the exhaust valve from your factory system directly onto your new Turner system. The Turner exhaust signature muffler design allows for two flow paths that change both tone and volume. With the vehicle in eco or comfort mode, the valves remain closed, with the closed valves the exhaust system allows the gasses to flow through the muffler toning down the volume and giving a more refined exhaust note. While in driving modes sport or sport+ the valve opens and the flow path changes to a "straight flow path" essentially turning into a straight-piped exhaust for the least amount of restriction and the most amount of B58 sound!
Turner Carbon Intake
Tired of looking at plastic in your BMW’s engine bay? Want something that will really make your bay stand out? ECS Tuning is excited to offer you the Turner Motorsport B58 Carbon Intake. The Turner B58 intake outflows factory significantly, the less restrictive design also reduces pressure drop post-filter, which translates to less stress on your turbo.
The Turner Motorsport G20/G22 B58 intake truly shines as the cherry on top of your engine bay, all while perfectly integrating with OEM inlet ducting and stock mounting locations. Turner's enclosed intake offers a carbon fiber lid that reduces intake temps up to 13 degrees compared to running an open intake. Flows 8% more air than factory intake system!
Key Benefits:
CAD designed Intake System for perfect integration with the OEM inlet ducting and stock mounting locations. Gloss Carbon Fiber Intake Tube with MAF-scaling, 6061-T6 anodized and carbon flanges - 2x2 Twill 12 Gauge 5052 aluminum Heat Shield with wrinkle black powder coat that mounts in factory location with hardware supplied Gloss Carbon Fiber Heat Shield Cover made from UV resistant clear coat - 2x2 Twill Conical hi-flow reusable Air Filter featuring 8 ply oiled cotton gauze and velocity stack filter flange to maximize filtration and efficiency. Less restrictive intake design allows for more flow than the stock intake. Stock:410.1cfm. Turner Intake:445.0cfm 8% gain in flow capacity.