Holley Sniper EFI HyperSpark Manual

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Holley Sniper EFI HyperSpark Distributors are designed to plug and play with Sniper EFI systems. This design includes a

single Hall Effect sensor providing crankshaft speed to the ECU. The precision machined shutter wheel design ensures

accurate timing, even at very high engine speeds. They can also be used with other EFI systems that support a Hall Effect

crank signal input.

NOTE: The distributor comes with a hardened steel distributor gear that should be compatible with most hydraulic roller

camshafts. It is recommended to consult your camshaft manufacturer prior to installation to confirm what

distributor gear material they require. When changing distributor gears, it is critical to measure the shaft diameter

OD and gear ID, before installing the new gear on the shaft.

Read this before proceeding

Before beginning the HyperSpark Distributor installation, we recommend that you locate a CLEAN Switched 12v

Ignition source. This source needs to have 12v while cranking, and with the key in the run position. Label this

source now, as you will need to use it for Step 9 of the Distributor Installation. Do NOT connect the switched 12v

wire to a source such as the ignition coil, or starter solenoid. It may be necessary to install a 4 pole relay to

provide a clean switched 12v Ignition source, Mr. Gasket 40100G will work perfectly for this application.

DISTRIBUTOR REMOVAL:

Disconnect the battery NEGATIVE (-) cable.

Disconnect the power and or ground connection at the coil. Tape up any non-insulated power and ground

terminals to eliminate any chance of a short circuit.

Rotate the crankshaft in the direction of engine rotation until it reads 0 degrees on the harmonic balancer. IT IS

CRITICAL TO VERIFY THE ENGINE IS ON THE COMPRESSION STROKE AT THIS POINT!

Remove spark plug wires and all other wiring/vacuum hoses from distributor. Now is a good time to clean off any

debris that may fall into the oil pump galley.

Remove distributor hold-down. Lift the distributor upwards and remove.

As you are removing the distributor, note that the rotor rotates as you lift the distributor out of the engine. This is due

to the helical cut gear and should be taken into consideration when installing the new distributor.

Your distributor will rotate clockwise or counter-clockwise. You will need to determine the proper direction of

rotation before proceeding. See chart below.

Engine Family

Small/Big Block Chevy

Chrysler Small Block

Ford 351W

Ford 302

BB Chrysler Wedge

Ford FE

Oldsmobile

Pontiac

Rotor Rotation

Clockwise

Counter-Clockwise

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Summary of Contents for Holley Sniper EFI HyperSpark

Page 1 Holley Sniper EFI HyperSpark Distributors are designed to plug and play with Sniper EFI systems. This design includes a single Hall Effect sensor providing crankshaft speed to the ECU. The precision machined shutter wheel design ensures accurate timing, even at very high engine speeds. They can also be used with other EFI systems that support a Hall Effect crank signal input.
Page 2 DISTRIBUTOR INSTALL: NOTE: If the engine block or heads have been milled, make sure that the distributor will fully seat and not bind or bottom out on the oil pump drive. A quick check is to remove the distributor gasket, and make sure that the distributor still fully seats on the mounting surface.
Page 3 Figure 3 NOTE: A spark plug wire retainer is supplied to secure the plug wires in place. Align the mounting bosses and use the supplied 1.5” self-tapping Phillips screws to hold the retainer in place. 8. Next, locate the wiring harness supplied with the distributor, plug the 2 pin connector from the distributor harness into the 2 pin connector on the Sniper EFI Main Harness (7 pin Connector).
Page 4 UPDATE FIRMWARE: NOTE: To use a HyperSpark Distributor with a Sniper, the system must be using these versions of firmware or later: Handheld: 1.1.7 (tslcd35st_sniper_fw_01_01_0070.fwu) ECU: 1.1.1 (SNIPER_01010000.eep) Software: Version 1.1 Build 2 ECU Firmware: From Main Screen. Files>ECU HW/FW Handheld Firmware: From Main Screen.
Page 5 Home Screen, Select Tuning Tuning Screen, Select System System Screen, Select Ignition Setup Figure 7 Figure 8 Figure 9 Ignition Setup, Press Ignition Type, Select HyperSpark Figure 10 NOTE: An ignition key cycle must be completed before the change will occur in the ECU. It is also ideal after you have cycled the ignition, to double check that the change has been saved.
Page 6 11. It’s time to check the timing. Remove the fuel pump relay. This will ensure that no fuel will be sprayed from the injectors. Crank the engine over and check the timing with a timing light. 12. To make sure the ECU is getting an RPM signal, look at the “RPM” on the Initial Startup screen of the Sniper EFI handheld.
Page 7 MISCELLANEOUS COMPONENTS: Replacement Black Cap: MSD 84313 or Holley 566-105 – Rotor MSD 8467 or Holley 566-106 P/N 8583 Bronze Gear, P/N 85832 Cast Iron Gear, P/N 85833 Replacement Steel Gear – Ford 302 P/N 8581 Bronze Gear, P/N 85812 Cast Iron Gear, P/N 85813 Replacement Steel Gear – Ford 351C-460 P/N 8585 Bronze Gear, P/N 85852 Cast Iron Gear, P/N 85834 Replacement Steel Gear –...
Page 8 Take the two measurements and subtract them. The difference is the overlap. If there is not enough clearance or too much clearance, a different oil pump intermediate shaft is required. Figure 15 – Measuring Oil Pump Shaft Overlap © 2018 Holley Performance Products. All Rights Reserved. Tous Droits Réservés. 199R11525 Revision Date: 5-14-18...