BMW Exhaust System Upgrades

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Sound + Power + Quality = the ultimate exhaust upgrade for the E46 M3. The Supersprint Race exhaust has a lot of fans, us included, with the mufflers producing an intoxicating shriek. This system covers the entire E46 M3 exhaust - headers, section 1, section 2, and rear mufflers with special discounted pricing. Although sound is subjective we feel the full Supersprint system produces the sexiest, most thrilling exhaust sound. It's an exotic, European-type sound unlike most American-made rumbling exhausts and it blends perfectly with the technical sophistication present throughout the E46 M3. This system does not diminsh the rasp inherent to the S54 but it's a refined and tuned sound that has won over many fans. And it's not all about the sound. Full system details:

• Stepped Headers - replaces factory manifolds and cats; equal length stainless tube in increasing stepped sizing
• Section 1 - matching stepped sizing straight pipes or metallic catalytic converters
• Section 2 - with or without resonator cross-over pipe
• Mufflers - Lightweight Race mufflers
  
• Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! 

Prepare yourself for an entirely new experience with your M2. Our performance cat-back features a fully upgraded system from the downpipe all the way to the rear diffuser for a total transformation in performance and sound. With the improved throttle response and free-flowing upgrade your car will feel like a new type of animal on the road and track.

Why choose the Turner Cat-Back exhaust for your M2? It’s more than just a bolt-on upgrade; it’s a performance upgrade designed for an easy and gratifying installation. Crafted from lightweight 3.0" stainless steel, the front pipe connects directly to your factory or aftermarket downpipe using a factory flange and v-band style clamp. This front pipe smoothly transitions into a 'Y mid-pipe,' splitting into twin 2.5" exhaust pipes. This configuration not only enhances airflow but also delivers a distinctive exhaust note, setting your N55 engine apart with individual style.

The highlight of our exhaust system is undoubtedly the muffler, inspired by the M2 Competition. Featuring equal 2.5" inlets, this muffler gives your M2 balanced performance and aesthetics with its quad-tipped design. What sets it apart even more is its dual-valve actuator feature. The kit includes a second valve actuator and dual wiring harness, allowing seamless integration with your factory valve control system with no additional wiring necessary.

Experience individual-styled sound and performance with your new Turner Cat-Back exhaust, engineered to elevate your driving experience with every rev.

N55 vs S55:
When shopping for an F87 M2 you have two options to choose from. Either you choose the standard M2 with the N55 engine or the M2 Competition that comes equipped with the S55. The best part about either the competition or non-comp M2 is you are still getting the "M" suspension, drivetrain, and experience. From our experience, there is not a big trade-off between the two models that can justify the price difference. With the N55 you get a lighter weight and extremely capable weapon. Paired with an intake, tune, and the Turner lightweight exhaust the M2 is not a car to be messed with.

Features:

Street/Motorsport inspiration
Enhanced exhaust note
Full exhaust replacement
M2 inspired dual Valved Muffler
Reduction in back pressure for increased torque and horsepower
Quad exit tips
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
3.0" combined with dual 2.5"OD 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 (direct fitment to the factory downpipe flange)
Lightweight free-flowing middle muffler sections for better sound, performance, and weight savings.
M2 Competition style dual valve muffler
Secondary exhaust valve actuator
Dual valve controller harness
Optional Turner Exhaust tips:
2.5" Inlet, 4.0" Outlet
2.5" Inlet, 3.5" Outlet
Clamps and Hardware for an OEM+ install
Optional Exhaust Pipe Hanger Removal Pliers
Optional OBD Plug-In:

Unlike the S55 and S58 equipped cars, non-M, and the N55 equipped cars do not have a strict open and closed valve option. The factory-valved muffler's operation varies with driving modes (comfort, sport, sport plus) and RPM, determining whether valves are open or closed. For precise control over exhaust valve positioning, consider adding a Bluetooth-enabled OBD plug-in for smartphone control. During testing, use an OBD-linked app(MHD) to select the optimal valve position based on your sound preference. This kit offers optional OBD extensions for diagnostics and the ability to adjust vehicle widgets, such as valve position on your valved muffler.

Product Development:

Our F87 M2 Valved Cat-back 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.