The factory turbocharger on the B48 pushes serious air, but as you increase boost pressures with aggressive software tuning, thermal management and boost holding become critical. Swap out the failure-prone factory diverter for an uprated turbo dump valves (diverter valves) unit to ensure your engine holds maximum pressure securely without leaking between shifts. Fine-tune your boost delivery with upgraded turbo actuators, and monitor your manifold pressure using accurate Boost gauges. To drastically reduce under-bonnet temperatures and improve turbo spool times, wrap your exhaust housing in highly efficient turbo blankets. You can also browse our misc turbo parts for the essential hardware, lines, and fittings needed to keep your forced induction setup running reliably.