Holley Sniper EFI 550-510 Quick Start Manual Download Page 8

It is now time to begin the Calibration Wizard! 

NOTE:

   DO NOT ATTEMPT TO START THE VEHICLE UNTIL YOU ARE TOLD TO DO SO IN THE INSTRUCTIONS BELOW. 

NOTE:

   The handheld has a SD memory card installed in the side.  This card contains specific information that is required for 

the use of the Sniper EFI product.  DO NOT replace this card with another.  There should be no need to remove this 
card for normal use.  

STEP 1 

Select WIZARD from the main menu 

STEP 2 

Select your Sniper system type 

STEP 3 

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 Sniper will target at 

coolant temperatures above 160 °F 

STEP 6 

Select your camshaft type: 

Stock/Mild = This selection will work well on most 
applications equipped with stock or “street performance” 
camshafts.  Choose Stock/Mild If you are unsure of your 
camshaft specs 

Street/Strip = Select this if your engine has between 8” 
and 13” of manifold vacuum

Race = Select this if your engine has less than 7” of 
manifold vacuum.  Race oriented camshafts may require 
laptop tuning for optimal idle stability

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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