The VRSF mid-pipe is a fantastic enhancement to any BMW S55. The biggest complaint people have about the newest F8X M3's and M4's is their boring exhaust noise. Many complained that putting twin turbos on the BMW inline 6-cylinder ruined the tone. Deleting the resonator and secondary cats allows the engine breathe, creating a better exhaust note and adding small horsepower gains. Below we linked a tutorial on how to install the VRSF mid-pipe on any F80 M3 or F82 M4, enjoy!
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