Holley Sniper EFI 550-510 Quick Start Manual Download Page 6

OR  

Ignition Option 2 

10.

Option 2

.  

Capactive Discharge Ignition 

– “C/D Box”

 - Locate the small 1 wire ignition adapter.  It has a single PURPLE

 

wire attached to a 2 pin connector (shown below).  Connect this wire to the distributor connector on the main harness.  The

 

PURPLE wires should plug into each other 

– the GREEN wire will be unused.  The loose end of the PURPLE wire will then

 

be terminated to the tach output wire on the C/D Box.  On an MSD 6AL (shown below) this wire is GREY.  Refer to the

 

ignition box instructions for more information on the tach output wiring.  If using this step, 

NEVER connect the PURPLE

 

wire to the ignition coil!

C/D Box w/ Tach Adapter to Main Harness 

Main Harness Overview 

11. The PINK 

wire labeled “Switched Ignition” needs to be terminated to the ignition source found and labeled from page 1.  We

STRONGLY recommend that you do not stack this wire with other switched 12v accessories.  This wire needs to be
isolated on its own individual switched 12v power source.  Failure to do this may result in a 

“no start” condition.

12. Co

nnect the 3.5” Sniper EFI Handheld to the main harness.  This is a simple plug and play connection.  If you are going to

permanently leave the handheld in the vehicle, you will need to find a factory grommet in your firewall to pass the Display
CAN bus connector through.  If no factory grommets can be utilized we recommend installing one.

Sniper EFI 3.5” Touchscreen LCD Display 

Summary of Contents for Sniper EFI 550-510

Page 1: ...N INSTRUCTIONS Congratulations on your purchase of a new Sniper EFI Throttle Body System built by craftsmen to exacting standards in our Bowling Green Kentucky facility Every Sniper EFI System is 100...

Page 2: ...hrottle body If there is not enough material a sealing plate Weiand PN 9006 can be used Factory dual plane intakes will require an adapter PN 17 6 Fuel System Requirements The Sniper EFI system requir...

Page 3: ...ON Timing Control Ignition types shown in step 8 for your first start up Before beginning the Sniper EFI installation we recommend that you locate a CLEAN Switched 12v Ignition source This source need...

Page 4: ...e a constant flow of coolant 5 Reconnect the appropriate vacuum hoses to the Sniper EFI throttle body Be sure to plug any vacuum sources not used Vacuum Port Side View 6 Connect fuel feed and return h...

Page 5: ...exhaust tube This will help prevent condensation in the exhaust tubing from entering the sensor The clamp on kit installation requires a 3 4 hole to be drilled in the exhaust system Refer to main inst...

Page 6: ...to the ignition coil C D Box w Tach Adapter to Main Harness Main Harness Overview 11 The PINK wire labeled Switched Ignition needs to be terminated to the ignition source found and labeled from page 1...

Page 7: ...E must remain powered during cranking 10 Pin Connector 8 wires are populated This connector contains Pin Color Labeled Name Function A Orange Input 1 Optional Connect to a ground triggered A C relay B...

Page 8: ...Select the number of cylinders your engine has STEP 4 Use the slider bar to input the displacement of your engine STEP 5 Use the slider bar to set your desired HOT idle speed This is the RPM the Snip...

Page 9: ...timing For more details on this feature refer to the Ignition Wiring Section of the Reference Manual Yes Proceed to Step 10 No Skip to Step 11 Note We highly recommend first starting the engine with...

Page 10: ...erly Go into the MONITOR MULTI GAUGE and select the AIR FUEL RATIO Icon Closed Loop Status Indicates whether the engine is Closed Loop or Open Loop Closed Loop indicates that the ECU is adding or subt...

Page 11: ...you can adjust the idle cruise WOT and Cranking timing settings FIRST DRIVE Congratulations on a successful installation of your Sniper EFI system Next you need to simply drive your car and let the S...

Page 12: ...12 SYSTEM INSTALLATION OVERVIEW...

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