Present day F1 relies heavily on wind tunnel testing to get the all important aerodynamic package right for races.  Ferrari has been faring poorly relative to Red Bull Racing and McLaren.  It has now been identified that the source of Ferrari’s problem is an inaccurately calibrated wind tunnel.  So Ferrari is now in the process of a recalibration of the wind tunnel.  This is something that will take time so there are no quick fixes for Ferrari’s problems.