Porsche 911 GT3R 2010 Technical Manual page 137

10.11.1.5. Driver influenc
10.11.1.6. Track
10.11.2. Traction control hints
e
KLMIFAASR (dry condition) and KLMIFAASR_WET (wet condition) are
factors to calibrate the driver influence to the TC controller. Both are 2D
maps with breakpoints addressed by the TC switch position. This factor is
included to give the driver the opportunity to influence the TC intervention
with „his right foot".
D ecrease of KLMIFAASR causes a longer TC intervention (less driver
influence)
Increase of KLMIFAASR causes a sh
in fluence)
Typical values are 50 up to 90 %
KLTCDSWASR is a track dependent correction for the TC. The
parameter is a 2D map with breakpoints addressed by the travelled la
dista nce. KLTCDSWASR allows to modify the TC position depending on
the track position. KLTCDSWASR is
original TC po sition (Driver demand)
KLTC DSWASR = 0 is the neutral calibration
-2 up to 2 are typical values for KLTCDSWASR
 If problems with the TC occur, first try to get rid of them by
altering the target slip. The target slip is dependant on t
track.
 Under normal conditions, the
recalibrated. It is suited to the car prior to the racetrack.
 Do one step after another, one variable at a time!
Beware of doing huge steps in calibration. A D-component

multiplied by two will lead to instability of the controller and
strong oscillations in the drivetrain. Calibration of a PID-controller
needs a lot expertise in control engineering!
orter TC intervention (more driver
an offset (positive or negative) for the
controller does not need to be
p
he race
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