What is one benefit of using an asymmetrical turbo?

Using an asymmetrical turbo presents the advantage of quicker spool time, which refers to the speed at which the turbocharger reaches its optimal boost pressure. This is primarily due to the design of the asymmetrical turbo, where one side of the turbine is smaller than the other. The smaller turbine can spin up faster, allowing for earlier boost generation at lower engine RPMs. This enhanced responsiveness provides more immediate power delivery and improves overall engine performance, particularly in applications where quick acceleration is beneficial.

In contrast to quicker spool time, the other options present less desirable characteristics. Higher fuel consumption typically results from inefficiencies rather than improvements. Increased emissions correlate with incomplete combustion and inefficiencies, which would not be a benefit of turbo design. More complex maintenance suggests increased difficulty in upkeep and repairs, contrasting with the streamlined design that asymmetrical turbos aim to provide. Therefore, the quicker spool time stands out as a significant benefit of utilizing an asymmetrical turbo.