CSF 2014+ BMW M3/M4 (F8X) Top Mount Charge-Air-Cooler - Raw Finish Suspension>Sway Bar Endlinks The system features BORLA®'S Polyphonic

The system features BORLA®'S Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

This creates frictional dampening

Clearance matters

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CSF 2014+ BMW M3/M4 (F8X) Top Mount Charge-Air-Cooler - Raw Finish Suspension>Sway Bar Endlinks The system features BORLA®'S PolyphonicThe S55 suffers heavily from heat soak. Many tuners witnessed this early on after doing multiple dyno pulls and seeing significant drops in power after each consecutive pass. Many F8X owners experienced the same loss of power on the track as the engine just could not cool off during laps. The solution is two fold: The Charge Air Cooler (CSF #8082 8082R) & Front Mount Heat Exchanger (CSF #8075 8075V) work together to keep the intake temps down and