Turboviive

Turboviive is a Finnish term that translates to "turbo lag" in English. It refers to the delay between the driver pressing the accelerator pedal and the turbocharger producing a significant boost in engine power. This delay occurs because a turbocharger relies on exhaust gases to spin its turbine, which in turn drives the compressor that forces more air into the engine.

When the throttle is opened, it takes a moment for enough exhaust gas to build up to spin the turbine sufficiently. During this period, the engine is not receiving the full benefit of the turbocharger, resulting in a noticeable lack of immediate acceleration. The size of the turbocharger, engine displacement, and the design of the exhaust and intake systems all influence the severity of turboviive. Smaller turbochargers generally produce less lag than larger ones because they can spool up more quickly.

Modern automotive technology has significantly reduced turboviive through various innovations. These include twin-scroll turbochargers, variable geometry turbochargers (VGT), and advanced engine management systems that optimize fuel injection and ignition timing. Electric turbochargers and hybrid systems are also being employed to further minimize or eliminate this characteristic. While once a prominent trait of turbocharged engines, turboviive is now less of an issue for most drivers.