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FEATURES
Detonation Elimination Technology (DET)
When DET senses and takes action to reduce detonation, the driver may
notice a drop in engine RPM and/or reduced performance.
The ECU will illuminate the check engine LED and display “dET” on
the LCD screen whenever the DET system is active.
If the ECU determines the detonation cannot be controlled by normal
means, and further operation may cause engine damage, the check
engine LED will flash, the instrument clusters will display “dET” and
the ECU will either limit the maximum engine speed or turn off the
engine.
If the ECU limits RPM, the limit will remain active until the driver stops
and restarts the engine.
DETONATION PROTECTION MODES
Check Engine LED/Gauge Display Protection Mode
600 Models
LED illuminated / “dET” displayed Slight drop in engine RPM/power
LED flashing / “dET” displayed Engine shut-off
800 HO Models
LED illuminated / “dET” displayed Slight drop in engine RPM/power
LED flashing / “dET” displayed Exhaust valves close to reduce
engine RPM/power. Restart engine to
reset.
Standard Gauge DET Display
IDD Gauge DET Display
NOTE: The IDD alert indicates which
cylinder is experiencing deto-
nation.
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