Light pressure turbo?? Pressure?? Even the unit (surbo) itself got energy to spin from engine vacuum, still try to claim it supply pressure to engine ka? It even make restrict airflow and make more vacuum by logic. Some say it will make the air swirl to engine and help create a better air/fuel mixture by install it in intake air duct. Do they think that the air after the surbo fan will keep spinning/swirl thru all the bend along intake duct go thru air filter and move along intake manifold bend in the swirl condition. It may keep swirl i think around 2-3 inch after the surbo only. U have to be real stupid to believe the theory behind this kind of thing.