Dominator on '94 & '95 Ford 302 with Black TFI module?

[JohnP]

The Gray TFI module was used on '93 and earlier Fords. It has an internal dwell controller and is referred to as the "Push Start" module. It does not require a dwell signal from the EEC. It fires the plug on the rising edge of the SPOUT signal, ignoring the falling edge, as dwell is computed inside the TFI module.

'94 & '95 used a Black TFI module, which has NO internal dwell control, and is referred to as the CCD module, for Computer Controlled Dwell. I need to know if the Holley controls dwell for Ford with distributor ignition, and if I can set the Dwell Time?

[Danny Cabral]

There's only one EFI software selection for that application - "Ford TFI (8 Cylinder) SEFI" in Ignition Parameters, and the Dwell Time is not user adjustable like many others are.

[JohnP]

That implies the older Gray TFI module must be used. Otherwise, with the Black module, Dwell would be a constant 50% duty cycle.

Danny, can you confirm the SPOUT signal for SEFI is fixed at 50%, or did they program a reasonable dwell value?

[Danny Cabral]

There are background Dwell Time tables, but I don't know what they are. Contact Holley Tech Service (LINK).
EDIT: The background ignition Dwell Time tables are "Base Ignition Dwell" & "Vol Comp Ignition Dwell" (as viewed in the EFI software Data Monitor & Datalogger). Long ago I was told by a Holley EFI Engineer, there's also a battery voltage compensation Dwell Time table.