Managing boost pressure with absolute precision is critical when pushing the highly strung M139 turbocharged engine to its upper limits. Upgrading your factory boost management hardware ensures stable pressure holding and rapid release during lightning-fast 8-speed DCT gear changes. Optimize your forced induction system by installing high-performance Turbo Dump Valves, also known as diverter valves, or recirc/recirculation valves. These essential upgrades prevent boost leaks, eliminate damaging compressor surge, and guarantee immediate, crisp throttle response whenever you get back on the accelerator.