Dominator EFI, Crank Trigger Kit, LSx Coils

[rm23u0a]

Custom Ignition Parameters for MSD Flying Magnet 4x crank trigger & Holley 554-118 Crank Sensor:
Ignition Type ............. ― "Custom"
Crank Sensor Type ..... ― "1 Pulse/Fire" (← Holley 554-118 crank sensor LINK.)
Sensor Type .............. ― "Digital Falling" (← Hall-Effect sensor.)
Inductive Delay .......... ― "adjusted per application" (← Synchronization info.)
Ignition Reference Angle ― "50° or 60°" (← Crank sensor setup LINK.)
Cam Sensor Type ........ ― "Single Pulse" (← If sequentially injected or CNP ignition.)
Sensor Type .............. ― "Digital Falling" (← Cam sensor setup LINK.)
Output Setup Type ..... ― "Points Output" (← Loose white wire CDI box trigger.)
Dwell Time ................ ― "2.0 msec" (← Do not set this to 1.5 msec!)

Is this the same when I'm using Holley DIS?

[Danny Cabral]

No! The Output Setup Type would be "DIS Waste Fire", and the Dwell Time would be "2.4 msec" (late coils). I don't know what the rest of your ignition system consists of (crank & cam sensors).

[rm23u0a]

OK. It’s a Holley Dominator ECU with a Dual Sync distributor, and a Holley 554-118 Hall-Effect, crank trigger kit. I'm using standard LSx coils.

[Danny Cabral]

GM LSx ignition coils are not "Holley DIS", which is a term for Holley Waste-Spark DIS.

Custom Ignition Parameters for MSD Flying Magnet 4x crank trigger & Holley 554-118 Crank Sensor:
Ignition Type ............. ― "Custom"
Crank Sensor Type ..... ― "1 Pulse/Fire" (← Holley 554-118 crank sensor LINK.)
Sensor Type .............. ― "Digital Falling" (← Hall-Effect sensor.)
Inductive Delay .......... ― "adjusted per application" (← Synchronization info.)
Ignition Reference Angle ― "50° or 60°" (← Crank sensor setup LINK.)
Cam Sensor Type ........ ― "Single Pulse" (← If sequentially injected or CNP ignition.)
Sensor Type .............. ― "Digital Falling" (← Cam sensor setup LINK.)
Output Setup Type ..... ― "DIS Coil On Plug" (← Holley CNP Smart Coils and/or LSx Ignition Coils)
Dwell Time ................ ― "3.5-5.0 msec" (← See page 1 for Holley CNP coils, and page 3 for GM LSx coils.)
https://www.holley.com/brands/holley...efi_dual_sync/ (Holley EFI Dual Sync Distributors)

[rm23u0a]

I have it set exactly the same as when I was using the Dual Sync distributor with DIS. Which is exactly how you just outlined it as well. I changed to the Hall-Effect crank trigger a few hours ago, but it won’t start. The Digital Dash display for the tach says syncing/error.

[Danny Cabral]

What crank trigger kit do you have? And you're using the Holley Dual Sync distributor for just the cam sensor, correct?

[rm23u0a]

Yes, Holley Dual Sync for cam sensor only. I have the MSD 8633 crank trigger kit, but I'm using the Holley 554-118 crank sensor. I'm using standard LSx coils.

[Danny Cabral]

Then post #4 is how the Custom Ignition Parameters are programmed. If it doesn't start, something else is wrong (such as crank or cam sensor setup or wiring).

[rm23u0a]

Great, thanks.