This technique integrates a turbocharger earlier than the carburetor or throttle physique in an engine’s induction system. This placement forces the turbo to “draw” the air-fuel combination via it, somewhat than pushing pressurized air right into a downstream carburetor. A typical software was present in older, performance-oriented automobiles searching for elevated energy output.
The benefit of such configurations lies of their relative simplicity relating to gas administration. As a result of the carburetor nonetheless meters gas primarily based on vacuum indicators, complicated digital gas injection methods aren’t initially required. Moreover, traditionally, this was a readily achievable technique to boost engine efficiency earlier than the widespread adoption of subtle digital engine controls. Nonetheless, the follow has drawbacks, together with doubtlessly uneven gas distribution and elevated danger of gas condensation inside the turbocharger.