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Modifications to the fuel modifiers should not be necessary with most applications. In some
situations, underlying differences to certain engine components may restrict the self-learning
feature from properly adjusting the base fuel calibration. In these cases, this feature allows
manual adjustments to be made by the user to reduce self-learn corrections and further assist
the self-learn process to help meet AFR Setpoints. For further information and procedure
see Adjusting Fuel Modifiers on Page #8 or contact Edelbrock Tech Line at 800-416-8628.
Crank Fuel
The Crank Fuel modifier will set the amount of extra fuel that is sprayed while the engine
is trying to start (cranking mode). This function takes affect during both warm & cold
starting conditions.
Base-Timing
This menu features a "Base Timing" function that must be performed to synchronize the ECU
and Distributor Ignition Timing. When Base Timing is active, the ECU output demands 12° BTDC
so the engine ignition timing can be manually adjusted with the distributor and timing light to
match 12° BTDC. This assures the ignition timing the ECU is commanding matches actual
engine ignition timing. Once base timing has been set, no further adjustment to the distributor
is necessary. The Spark Control menu will be used for all ignition timing modifications.
Base Timing Procedures:
1. Connect a Timing Light & slightly loosen the Distributor hold-down clamp.
2. Turn Key-On power to the ECU and verify a Bluetooth connection with the ECU.
3. Press the "Set Base Timing" icon. This will lock the Demand Ignition timing to 12° BTDC.
Once the engine is running, the ECU will hold the Demand Ignition timing at 12° BTDC.
4. Start the engine. If necessary, adjust both Throttle Body Idle Screws evenly as necessary
to keep engine running at idle.
5. Rotate the distributor to adjust engine ignition timing to 12° BTDC on engine damper
pulley with timing light..
6. Make sure the Engine Ignition Timing stays at 12° by slowly opening the throttle to raise
the RPM. Re-adjust distributor if necessary.
7. Tighten the Distributor Clamp and remove Timing Light.
8. Press Unlock Timing to restore the Ignition Control. This will also apply a standard ignition
advance curve from the ECU.
9. The distributor is now properly configured for Ignition Control.
10. To verify or make changes to the Ignition settings, go to the Spark Control menu. If no
adjustments are needed, press OK to return to the Advanced Tuning menu.
Spark Control
Enables adjustments to the ignition advance curve. Adjusting these values have the same
effect as changing the weights and springs in a traditional mechanical distributor with vacuum
advance.
○
Default Timing at Idle: 15° at 1200 RPM (Typical Values 17° - 25°)
○
Default Total Timing: 36° at 3000 RPM (Typical Values 34° - 38°)
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