Sophie Taylor, 22, from Llandaff, died when her car crashed into a block of flats at the junction of Meteor Street and Moira Street in Adamsdown on Monday.
A 21-year-old man, who was a passenger in the car, remains in a critical condition.
Police are appealing for witnesses.
They are keen to hear from anyone who may have seen three cars - a black BMW 1 Series, a white BMW 1 Series and a black Vauxhall Corsa - travelling together around Cardiff late on Sunday and the early hours of Monday.
Two men and two women who were arrested on suspicion of manslaughter following a car crash in Cardiff have been released on bail.