[6] This 2.9-litre V6 uses single-scroll rather than twin-scroll turbos, which produce 1.4 bars (20 psi) of boost pressure.
Alfa also added mechanical cylinder deactivation to the right bank for increased highway fuel efficiency.
This configuration results in uneven firing at 90 and 150 degrees of each rotation, but for each cylinder bank results in even pulses every 240 degrees, providing evenly-spaced exhaust pulses to each turbocharger and allows one bank to deactivate.
[2] Additionally, from 2020 onward, Alfa added port injection, doubling the number of injectors to 12.
[8][9] In 2023 Alfa Romeo presented the 33 Stradale model that featured a bigger displacement 690T engine.