Active Autowerke BMW F80 F82 Exhaust Mid-Pipe - Non-resonated (M3 & M4)
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Active Autowerke Exhaust Mid-Pipe with Non-resonated Connecting Pipes for the BMW F8X M3 & M4.
Active Autowerke has been an industry leader in engineering high quality BMW performance products for over 30 years. Dedicated to improving performance with the highest quality products, Active Autowerke is synonymous with making power. Our philosophy on developing refined BMW performance parts, with power in mind, and providing them to a large BMW community can be best characterized by our F80 M3 and F82 mid pipe – a valuable addition to our F8X BMW collection.
The Active Autowerke F8X Mid Pipe was specifically designed to eliminate the highly restrictive nature of the OEM F80 M3 and F82 M4 mid pipe – thus creating optimal exhaust flow and drastically improving performance. In addressing the annoying sound ( described by many like that of a weed-eater ) we needed to better understand the issue. After much research and testing we discovered the synchronization of the Turbos as the main factor in the sound. The solution was a single mid pipe which eliminated much of the annoying sound. The next challenge was making a large 3.5" pipe ( needed for optimum performance ) fit without ground clearance issues - thus the oval pipe. Engineered for an exact fit on both the F80 M3 and F82 M4, the difference in power with this mid pipe will be noticeable the moment it is installed!
Now available with resonated connecting pipes. Please see Active Autowerke BMW F80 F82 Exhaust Mid-Pipe - Resonated (M3 & M4) if you are interested in the resonated version.
- 18+ WHP over stock*
- 30+ LB-FT over stock*
- Improved performance from less back pressure
- Deeper & throatier exhaust note
- Less restrictive, more free flowing
- Lighter weight than factory system
- Quicker turbo spool
- Increased low end and mid-range power
- Single-pipe design eliminates cheap “weed-eater” sound from factory exhaust
Mustang Dyno Results
- Active Autowerke F8X Mid Pipe
- Active Autowerke F8X Rear Exhaust Section
F8X BMW M3/M4 Exhaust Results:
RED Line – Stock Figures: 380 WHP | 371 WTQ
BLUE Line – Full Active Autowerke Exhaust: 398 WHP | 401 WTQ
GOLD Line – Full Active Autowerke Exhaust Run 2: 397 WHP | 398 WTQ
Note: Active Autowerke Full Exhaust System is recommended for, BUT NOT LIMITED TO, off road or racing applications.
Performance Mid Pipe Redesign
BMW applied two silencers in the middle and rear of the factory F8X exhaust system to assist with noise dampening. The middle silencer has a small crossover internally. This helps with drone, however, it is also quite restrictive and amplifies the uneven, out-of-sync turbocharger sound that many owners have complained about.
Upon analyzing the F8X exhaust, we came to the decision that we can accomplish more with much less – therefore designing our F80 M3 and F82 M4 exhaust started with the highly restrictive mid pipe. With our design, we were able to drastically increasing exhaust flow, while virtually eliminating the "dueling 3-cylinders" sound.
M3/M4 Mid Pipe Performance Advantages
In order to get the most possible gains, we had to apply some trade secrets to our mid pipe design – many of our competitors have done the same. However, we wanted our F8X Mid Pipe to stand out from the rest.
Unlike the design of the factory mid pipe, and the mid pipes of our competitors, we decided on a singular pipe design. This was for a few reasons:
First and foremost, to cancel out that cheap weed eater sound that is so frequently complained bout. Not only does this design cancel out the un-M3-like sound, it creates a deeper, more harmonious sound that most have come to expect from a performance car built by the ///M Division. Naturally, with this increased flow – we were able to pull out a surprising amount of power. Eliminating this extra pipe also allowed us to save some valuable weight, which as you know, translates to improved performance!
Special thanks to our customer Stephen D.