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Old 04-17-2024, 01:08 PM
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HWYSTR455 HWYSTR455 is offline
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Join Date: Jan 2005
Location: Manassas, VA
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On inductive delay, there's no way you can use any out of the box or recommended setting, you just flat out have to check and adjust for every application. There's no way around that. Without doing that, it can retard or advance a VERY CONSIDERABLE amount, like 25-30 degrees.

" Synchronizing the EFI timing (laptop) with the engine timing (timing light):
NOTE: Temporarily disable the "Idle Spark" control (in Idle Settings).
1) Turn the distributor or adjust the crank trigger to synchronize the initial (idle) timing, then lock it down.
Next, ensure timing is synchronized at higher RPM using the EFI software.
NOTE: Now use the EFI software "Enable Static Timing Set". I use a Static Timing value of 25° or 30°.
2) Momentarily rev the engine, and watch the timing advance with your timing light. It shouldn't move.
If timing advances or retards, adjust the "Inductive Delay" until the timing maintains itself.
If the ignition timing retards, increase this value. If the timing advances, decrease this value.

SUMMARY: The initial (idle) timing is synchronized by turning the distributor or adjusting the crank trigger, and locking it down. The timing at higher RPM is synchronized by adjusting the Inductive Delay in the EFI software. The first synchronization is physical, and the second synchronization is electronic (Inductive Delay). Believe the timing light above all else, it's always the real timing (if there's a discrepancy). When finished, the timing as viewed on the laptop, should match what you see with the timing light, at all RPM.
Once the ignition timing is fully synchronized, the Timing Table can be tuned for each application."

This is not something you can guess at. If this isn't right, you will battle your tune into infinity, it will never be right.



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