When inspecting the F8x M3/4 in any amount of detail, one thing becomes abundantly clear- in their quest for the perfect M car, BMW left no stone unturned, no issue unaddressed, no aspect of the car’s behavior un-optimized. Technology and art in engineering has enabled BMW to create an absolutely spectacular M3, a car that’s capable of plush comfort when driven normally, and life changing performance when driven in anger. Simply put, the M3/4 is BMW’s latest masterpiece, and has made all of us at IND fall in love with BMW M all over again.
Watching BMW create and engineer their new F8x inspired us and Eisenmann Exhaust Systems GmbH to respond in kind. We knew that we could not simply connect a series of pipes to a generic canister and attach exhaust tips at the end. Every aspect of the design had to be analyzed, evaluated, and perfected until the exhaust system as a whole was absolutely flawless. Eisenmann did not approach the design of this exhaust system with the idea of beating their competitors- Eisenmann’s only peer in this race would be BMW M itself, and no stone could be left unturned.
Today, we are happy to introduce Eisenmann’s own masterpiece, the F8x M3/4 Eisenmann Heritage valved exhaust system. Eisenmann’s Stuttgart-based engineers have leveraged 30 years of heritage as Germany’s premier exhaust manufacturer as well as decades of experience as OE designers and manufacturers for Porsche and AMG to create the M3/4 Heritage exhaust system.
Each system is constructed from high grade 304 stainless steel, with a specific attention to wall thickness throughout to create the best combination of fantastic sound and reduced weight. The canisters are machine-pressed into a shape specifically designed for the F8x M cars using a series of deep draw dies, resulting in extremely high canister rigidity and contributing to Eisenmann’s signature tone. The canister shape was specifically created to completely eliminate the canisters from the rear view of the car, drastically improving the appearance of the F8x cars. Multiple internal flow paths work in unison with BMW’s Comfort, Sport, and Sport Plus ECU programming, and enable Eisenmann’s valve control to have a variable but drastic effect on the exhaust system’s personality, yielding a quiet tone while cruising and a fearsome growl under full load.
Eisenmann’s Heritage system is available as a rear section or complete exhaust system, enabling M3/4 owners to choose their sound level in stages. The complete system will include everything from the exhaust tips to the BMW downpipes, allowing for a bolt-on solution for easy installation and an aggressive sound. Improved flow capacity gives the exhaust system sufficient overhead for future modifications, removing any restriction in the system and enabling the F8x’s S55 powerplant to make even more power.
The new “Signature” tip combines what was great about BMW M’s design with the classic Eisenmann LeMans style to create something that is both at home on BMW’s new M car and also an homage to Eisenmann’s own classic tip designs. Eisenmann’s new “Signature” tips are specifically designed to emulate the style of the BMW M tips, to allow our clients to remain within the M realm of design and appearance, while simultaneously having something very unique- the added “LeMans style” inner tip is an Eisenmann hallmark, and has been unique to Eisenmann for over a decade.
In short, we are confident that this is the best Eisenmann F8x M exhaust possible. We are thrilled to present the new F8x M3/4 exhaust system to M enthusiasts worldwide!
The sheer volume of phone calls asking about the new F8x M3/4 Eisenmann exhaust system that we have fielded at the IND offices over this previous month has been absolutely staggering. Although we cannot release details on the production system just yet, I am confident in saying that just as BMW left no stone unturned in designing this new F8x M3/4, Eisenmann has left no stone unturned in designing the perfect exhaust system for the car. I can truly say that the new F8x exhaust is Eisenmann’s best effort to date- a big claim, considering that Eisenmann Exhaust Systems GmbH has been building exhaust systems for nearly 30 years.
As we do not want to leave the BimmerPost audience in complete suspense over this weekend, we are happy to announce that the very first audio clips of the new Eisenmann system are ready for release. This video shows the Eisenmann rear section installed on IND’s own F82 M4, driven in the “Sport Plus” M mode. Like the rest of the F8x M car, the Eisenmann system’s behavior and sound will change to suit the driver’s mood, using the original BMW in-cabin controls.
For now, this is all that we can say about the new Eisenmann system. All of us at IND are truly proud to have been a part of the development of this exhaust, and are absolutely thrilled to see the feedback from the M enthusiast audience in just over a week, when we can release all of the information about our new Eisenmann exhaust.
Enjoy the video!
The factory exhaust system found on the F10 M5 is a very well designed piece, with one continuous length of piping from the down pipes to the exhaust tips, generous piping diameters, and a nearly straight through muffler design. Unfortunately the original exhaust system does not produce a sound quite as sporting as many fans of the M5 would like, and the original exhaust tips also leave something to be desired. Many M5 owners are interested in the extra sound and larger tips of a performance exhaust system, but do not wish to add a complete exhaust system to the car, and this DIY installation guide of an Eisenmann rear muffler addresses just that.
You’ll need to lift the rear of the car, either by putting the car on a lift or placing the car securely on jackstands.
This shot shows the section of piping where a cut will be made to allow the Eisenmann rear mufflers to be installed.
Line up the Eisenmann rear muffler directly below the original BMW system. The key is to align the Eisenmann hangers so that they are immediately below the BMW exhaust hangers.
The Eisenmann exhaust piping contains an expanded section that is designed to slip over the original BMW piping. Use a straight edge to align the beginning of the expanded section with the original piping, and place a mark on the original piping. The goal here is to ensure there is a sufficient length of original BMW piping to slip inside the Eisenmann piping. Remember to measure twice and check your measurements as this step is important!
At this point you can use some masking tape to mark a complete line.
Use a pipe cutting tool to cut the connecting pipe
The mufflers are removed by unbolting the exhaust hangers. We will have some more detailed photos of the hanger locations early next week.