QUICK INFO:

This optional installation step is necessary when one wants to detect knock using a variable noise threshold vs rpm, knock per cylinder, or both.

Depending on convenience and preference there are 5 alternative connection points for getting trigger signal. For knock/rpm any of the

5 options can be used, whereas for knock/cylinder only options C, D & E are suitable.

TRIGGER INPUT

CONNECTOR

red:    trigger-1 input

black, blue and white trigger connections are not used

A. INJECTOR OUTPUT

Required Action

- Select FALLING edge in menu 3.3

Hint!

Only works with saturated injector drivers, not peak and hold type.

B. TACHOMETER OUTPUT

Required Action

- Select any edge in menu 3.3

C. ECU WITH INTERNAL COIL DRIVERS

Required Action

- Select RISING edge in menu 3.3

D. ECU WITH EXTERNAL COIL DRIVERS

Required Action

- Select FALLING edge in menu 3.3 when connecting to th ecu side, or RISING when connecting to the coil side of the ignition module

E. ECU WITH CAPACITIVE DISCHARGE IGNITION

Required Action

- Choose edge according to the CDI trigger pulse

Attention!

- Connect the trigger inputs ONLY to the ecu side, NEVER to the coil side

- For per cylinder knock detection the trigger input has to be connected to the number "1" cylinder signal