Holley Distributorless Ignition Wiring

[Donski]

I want to install Distributorless Ignition as per page 23 & 24 from 199r10555rev16. It shows the first four cylinders of rotation into four coils using Waste-Spark. What's the setting, or how does the ECU know that it needs to fire another crank rotation for the remaining cylinders in the firing order? Is it simply by selecting Waste Spark in the Ignition Parameters? Thanks.

[Danny Cabral]

Typical Holley DIS Custom Ignition Parameters:
Ignition Type ........ ― "Custom"
Crank Sensor Type ― "60-2" or "36-1"
Sensor Type ........ ― "Digital Falling"
Inductive Delay .... ― "adjusted per application" (← Synchronization info.)
Timing Offset ....... ― "0°"
TDC Tooth Number ― "9, 10, 11 or 12" (60-2) or "7" (36-1)
Cam Sensor Type . ― "Single Pulse" (← If sequentially injected.)
Sensor Type ........ ― "Digital Falling" (← If sequentially injected.)
Output Setup Type ― "DIS Waste Fire"
Dwell Time .......... ― "1.8 msec" (early coils) "2.4 msec" (late coils)

Originally Posted by Danny Cabral FYI: Holley EFI now sells their own Dual Sync (LINK) & HyperSpark (LINK) Hall-Effect distributors. They're a small cap design, "plug & play" with Holley EFI, and no need for a modified Firing Order. The Dual Sync crank & cam sensor signals also provide sequential injection capability (MPFI applications). The Dual Sync is "plug & play" (into the 10-pin ignition connector on the EFI Main Harness), and both distributors require a CD ignition box (Instructions), unless the Dual Sync is used with a CNP ignition system. The MSD 6201 Digital 6A CDI box & 8253 HVC-2 coil are a great match. The MSD CD ignition box is wired as shown in the Holley EFI Wiring Manual: http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Figure 11, Page 20) https://www.youtube.com/watch?v=AM7r-DauCak (Holley EFI Dual Sync Distributor - YouTube Tech Video) https://www.youtube.com/watch?v=2JpHlS1ymBc (Holley EFI HyperSpark Distributor - YouTube Tech Video) A Dual Sync blank cap is available, if the user decides to convert to Coil-Near-Plug/DIS later (no CDI box). Of course, the Dual Sync distributor can also be used as a crank and/or cam sync/oil pump drive unit. The Custom Ignition Parameters (in System Parameters) for the Holley EFI Dual Sync Distributor: Ignition Type ............. ― "Custom" Crank Sensor Type ..... ― "1 Pulse/Fire" (← Holley Dual Sync Distributor) Sensor Type .............. ― "Digital Falling" Inductive Delay .......... ― "100.0 usec" (← Synchronization info, adjusted per application.) Ignition Reference Angle ― "50°" (← Inherent Ignition Reference Angle & rotor-phasing of this unit.) Cam Sensor Type ........ ― "Single Pulse" (← "Not Used" for TBI, unless CNP ignition.) Sensor Type .............. ― "Digital Falling" Output Setup Type ..... ― "Points Output Fixed Duty Cycle (MSD)" (← MSD CD Ignition Box) ----------------------------------------------------------- Holley CNP Smart Coils and/or GM LSx Ignition Coils: 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) The Custom Ignition Parameters (in System Parameters) for the Holley EFI HyperSpark Distributor: Ignition Type ............. ― "Custom" Crank Sensor Type ..... ― "1 Pulse/Fire" (← Holley HyperSpark Distributor) Sensor Type .............. ― "Digital Rising" (← I prefer Digital Falling, LINK.) Inductive Delay .......... ― "100.0 usec" (← Synchronization info, adjusted per application.) Ignition Reference Angle ― "57.5°" (← Inherent Ignition Reference Angle & rotor-phasing of this unit.) Cam Sensor Type ........ ― "Not Used" (← This distributor doesn't have a cam sensor.) Output Setup Type ..... ― "Points Output Fixed Duty Cycle (MSD)" (← MSD CD Ignition Box) https://www.holley.com/brands/holley..._distributors/ (Holley EFI HyperSpark Distributors) https://www.holley.com/products/fuel.../parts/558-323 (Holley EFI HyperSpark Ignition Adapter)

[Donski]

Perfect. Thanks.

[Donski]

Another question. On page 23 of 199r10555rev16, in the ECU P1B connector it shows:
EST A as being Green/White, whereas the wiring diagram of section 13 shows the ECU pin-out EST A as Yellow/White.
EST B as Orange/White vs Green/White.
EST C as Yellow/White vs Gray/White.
EST D as Gray/White vs Orange/White.
I figure I should follow the main schematic vs page 23?

[Donski]

Holley DIS Wiring

I'm trying to sort out which trigger wires to use. On page 23 of 199r10555rev16, in the ECU P1B connector it shows:
ECU pin-out of EST A as being Green/White, whereas the wiring diagram of section 13 shows the ECU pin-out EST A as Yellow/White.
ECU pin-out of EST B as being Orange/White whereas the wiring diagram of section 13 shows the ECU pin-out as EST B as Green/White.
ECU pin-out of EST C as being Yellow/White whereas the wiring diagram of section 13 shows the ECU pin-out as EST C as Gray/White.
ECU pin-out of EST D as being Gray/White whereas the wiring diagram of section 13 shows the ECU pin-out as EST D as Orange/White.
I figure I should follow the main schematic vs page 23?

[Danny Cabral]

https://forums.holley.com/showthread...1826#post71826 (Related Forum Post)

[Donski]

Thanks. I appreciate it.