Lancia Delta Owner's Handbook Manual page 106

On the 1.4 Turbo Jet 150 HP version, when the SPORT
button is pressed, the turbocharger (overboost) function
is also activated; the engine management control unit, de-
pending on the
position of the accelerator pedal and, for a limited time,
allows maximum pressure leves inside the turbocharger
to be reached with a consequent increase in engine torque
compared with that that can be reached normally.
This function is particularly useful if maximum perfor-
mance is required for a short period (e.g. when overtak-
ing).
IMPORTANT When the SPORT function is used, during
acceleration shuddering of the steering may be noticed
which is typical of a sports setting.
IMPORTANT The function is activated about 5 seconds
after the SPORT button is pressed.
GETTING TO KNOW YOUR CAR
System failure
In the case of fault, the system notifies the driver by means
of a message on the reconfigurable multifunctional display
instrument panel and by lighting up the amber symbol
In this case, go to a Lancia Dealership.
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