by: Active Autowerke
After months of testing this system with various size piping our engineering team decided that 3.5” piping is the best suited size for a true free flowing design on the BMW 135i exhaust. The increase in piping size decreases back pressure allowing the BMW 135i’s twin turbo to spool even faster resulting in increased horsepower and torque throughout the entire RPM range. This was the design feature of the GEN 1 E82.
However, when a set of Down Pipe was installed, some customers experienced a higher sound decibel tone with the total package.
What we created was the development where no increase in the decibel level was noted, even with the addition of a set of down pipes. The solution is the creation of the GEN 2 Signature Rear Exhaust.
The 3.50" stainless steel exhaust tubing was still maintained to keep the power, but the addition of a High Flow sound regulating muffler was incorporated. This design showed no decrease in power and successfully lowering the decibels.
Manufactured from 100% polished 304 stainless steel this bolt on system is well suited for the BMW E82 135i owner who wants a quieter exhaust with down pipes.
$ 229.00 $ 299.00
Stock or Modded...You Need This For Your N55 Powered BMW! Active Autowerke BMW N55 Charge Pipe 2011 - BMW E8X 135i with N55 engine2011 - BMW E9X 335i with...
Sold Out - $ 325.00
Now you can reduce the stresses on your BMW 135i or BMW 335i with the installation of the Active Autowerke BMW Strut Brace (front). When installed, this BMW strut brace allows...
$ 429.00 $ 499.00
Looking to maintain the power on your BMW 135i and 335i? Install the Active Autowerke BMW 135i 335i intercooler sport version for nearly factory-like fitment and experience the meaning of sustainable BMW power in...
Variant 1V1: Lowering front: 1.4"-2.5" / Lowering rear: 1.4"-2.1"Sporty Handling with factory pre-set dampingThe ideal system for customers wishing to rely on the experience of our engineers to set the...