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Static Ignition Timing Use this parameter to tell the ECU where the physical location of the trigger sensor is in relation to TDC. If the trigger sensor is 10 degrees BTDC then set this parameter to 10 deg BTDC. The ECU will use this value to calculate the exact ignition timing.

To ensure that the static timing is correct you may check it with a timing light. Follow the procedure set out below to check the timing with a timing light.

Set the Static Timing parameter to “Locked”. You should hear the engine change note as the timing retards to static. Using a timing light, check the timing and record this value in the Static Timing parameter. Remember to press enter to save the changes to the ECU memory.

Staged Injection The STINGER 4 ECUs will allow you to install 1 secondary set of injectors that can be staged to progressively start when the injector capacity reaches over 80 percent duty.

For engine configurations where the primary and secondary injectors are the same size, set the staged number to 57.6%. This will cause the injector on-time duty to be halved once the staged injectors are activated. For secondary injectors of a differing size to the primary injectors you will need to adjust this parameter experimentally.

If the secondary injectors are smaller than the primary injectors then the number should be larger than 57.6%, thus the ECU will not reduce the injection time as much when the secondary injectors are activated.

If the secondary injectors are larger than the primary injectors then the number should be smaller than 57.6%, thus the ECU will reduce the injection time by a larger amount when the secondary injectors are activated.

WARNING!! DO NOT SELECT STAGED INJECTION FOR NON-STAGED INJECTED ENGINES, AS THIS WILL CAUSE ENGINE DAMAGE.

Stinger 4 instruction manual version 2.0

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