Precise boost control is vital for extracting maximum power, response, and reliability from the twin S55 turbochargers. Prevent boost leaks and ensure rapid pressure holding between manual gear changes or lightning-fast 7-speed DCT shifts by upgrading your factory plastic hardware to high-performance Turbo Dump Valves, also known as diverter valves, or recirc/recirculation valves. These upgrades keep your forced induction system operating flawlessly with crisp throttle response under elevated boost pressures.