Technician A says that turbochargers increase engine performance by increasing the engine’s volumetric efficiency. Technician B says that a wastegate is used to limit a turbocharger’s boost pressure...

Technician A says that turbochargers increase engine performance by increasing the engine’s volumetric efficiency. Technician B says that a wastegate is used to limit a turbocharger’s boost pressure to avoid preignition and engine damage. Who is correct?

A. Technician A only

B. Technician B only