Are you looking to take your car to the next level? An exhaust is a great
modification that will do just that by giving your car more aggressive exhaust
tips, a deeper and meaner sound, and increase horsepower by improving your car's
air intake system! Eisenmann Exhausts are customized to meet your individual preferences.
Select from one of two performance levels. A higher performance level provides
both an increase in horsepower and a louder, deeper sound. We also offer a
variety of different tips to suit your personal needs and BMW.
BMW E85 Z4
- 3.0i / 3.0si Roadster (2006+)
- 3.0si Coupe (2006+)
- Sport Performance - The basic exhaust level, improves performance and
provides a louder tone.
- Racing Performance - A more serious option, provides higher
performance, more weight savings, and a louder tone.
- Replace restrictive factory muffler
- Enlarge the rear-most pipes
- Weight reduction from stock muffler
- A better looking exhaust tip
- Polished muffler
- Beefy pipes
- Throatier and louder sound to enhance your car overall
Available Tip Options
"Increase Your BMW's Performance..."
Average % HP gains as measured on BMW E36 M3s equipped with Eisenmann.
Numbers may vary based on the make and model of your vehicle.
||4.1 - 4.7%
||26.1 - 28.8 %
||3.3 - 4.7
||28 - 37%
||6.1 - 6.4 %
||20.2 - 25.5 %
||5.1 - 8.9
||35 - 70%
"Deeper, Louder, and More Aggressive..."
The previous are the results of a Decibel (sound level) test conducted in a
BMW E36 M3 equipped with an Eisenmann Exhausts. Numbers may vary based on the
make and model of your vehicle.
Eisenmann Exhausts reduce engine heat and backpressure and improve
exhaust scavenging from the combustion chamber. They also minimize the power
robbing effects of the OEM system to restore torque and horsepower to the
Why is Backpressure Bad?
Backpressure is a typical feature of an exhaust system. The backpressure on the
exhaust flow can help to reduce sound, but at the same time, it limits engine
power. This power reduction comes from an inefficient burn in the
combustion chamber where spent exhaust gasses are backed-up into the combustion
chamber and contaminate the next burn cycle.
A second problem associated with backpressure is heat build-up. This
occurs in the OEM style chamber muffler. Hot exhaust gasses are forced through
louvers and into dead-end chambers. The heat builds up in the muffler and then
backs itself up through the entire exhaust system to the exhaust manifold and
engine. This heat retention causes damage to the muffler as well as the
catalytic converter, the system tubing, the manifold and gaskets. Even ignition
wires can burn up due to an overheated, inefficient exhaust system.
How do Eisenmann Exhausts Solve the Problems of Backpressure?
Eisenmann reduces the backpressure while maintaining a rich powerful
performance tone. Annoying exhaust frequencies are dampened with a dense
wall of acoustical absorbing material. The straight-through design prevents
excessive heat retention allowing the entire system to run cooler and
*Please Note - Previously, EisenHaus offered three different performance
levels: Sport Performance, High Performance, and Race Performance. Recently, the performance levels were revised to include only two different
performance levels: The current Sport Performance and Racing Performance. In this revision of performance levels, the previous Sport Performance was
eliminated and the previous High Performance was re-named to Sport Performance.
Therefore, if you were familiar with the previous High Performance version, it
is now called the Sport Performance.