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

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.