3 ms·

The lag is there because turbines are powered by exhaust gases and theres no increase in exhaust without increase in intake, and the turbine is responsible for

The lag is there because turbines are powered by exhaust gases and theres no increase in exhaust without increase in intake, and the turbine is responsible for increasing the air intake but it can't because there's not enough exhaust - a hen and egg problem... But Volvo did something interesting - they used an electric turbine that doesn't have to wait for the exhaust to increase, it can be spinned almost instantly when you press the pedal, so there should be no lag

sliverstorm 12y ago
Turbo lag is a non-problem with a turbo that is sized to match the engine. Too small of a turbo hits peak flow too early, cutting the peak power Too large of a turbo doesn't get enough exhaust flow to develop boost until 4000RPM or higher A properly sized turbo begins to develop boost between 2000-3000RPM, which is just right for most cars. When you are just puttering around town you are not developing boost, but the steep power curve of boost is only a moment away.