Related Manuals for Holley Sniper EFI 550-852
Summary of Contents for Holley Sniper EFI 550-852
- Page 1 • 2 Injector Sniper EFI (550-849 Shiny, 550-850 Black, & 550-851 Gold) • 4 Injector 2300 Super Sniper EFI (550-852 Shiny, 550-853 Black, & 550-854 Gold)
- Page 2 Failure of any one component does not constitute, nor does it justify, warranty of the complete system. Individual service items are available for replacement of components. If assistance is required or if you need further warranty clarification, please call Holley Technical Service at 1 (270) 781-9741.
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Page 3: Table Of Contents
TIMING CONTROLLED IGNITION SYSTEM WIRING ....................26 Timing Control Preface: ............................26 MSD (Magnetic) Distributor [Timing Control] ......................26 Holley Dual Sync Distributor [Timing Control] ......................31 HANDHELD NAVIGATION ............................37 Possible Screens ..............................37 INITIAL EFI SETUP ..............................39 Calibration Wizards .............................. - Page 4 BASIC TUNING ................................48 Basic Fuel ................................48 Target AFR ................................49 Acceleration Enrichment ............................49 Fuel Prime ................................50 Closed Loop Enable/Disable ........................... 50 Learn Enable/Disable .............................. 51 Basic Idle ................................. 51 Spark ..................................52 SYSTEM TUNING ................................ 52 Outputs ..................................
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Page 5: Introduction & System Requirements
(more fuel flow may be needed for higher horsepower engines). When selecting a pump, and lines, be sure each component is designed to perform at high pressure. Holley offers a variety of fuel pumps, hoses and accessories to complete your installation. -
Page 6: Parts Identification
PARTS IDENTIFICATION ITEM # IMAGE DESCRIPTION SERVICE P/N NOTES Use of leaded fuel will degrade sensor. Prolonged will require periodic Bosch Wide Band 554-155 replacement. Oxygen Sensor Mounting procedure below is critical for system performance Requires 3/4” hole to be drilled ... -
Page 7: Throttle Body Installation
THROTTLE BODY INSTALLATION Draw through Supercharger Applications: To use 2300 Super Sniper on a draw through boosted application (I.E. positive displacement blower),the throttle body must be converted to read manifold pressure from a remote source that sees manifold pressure. To do this, remove the 1/16” NPT plug on the throttle linkage side of the throttle body. - Page 8 Throttle Linkage/Bracket Side View Throttle Stud/Ball Ford C4 / C6 Kick Down TH350 Kick Down 200-4R / 700-R4 Kick Down Reconnect the throttle and if applicable transmission kick-down linkage. Be sure to check for any binding conditions and correct before proceeding. Poorly routed throttle cables & linkages can cause throttle pedal issues.
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Page 9: Oxygen Sensor Installation
If the O2 cable has melted it is not something fixed under warranty and will require the unit to be sent back to Holley to be repaired at customer cost. Ensure the location for the sensor is at the angle in Figure 1. This will help prevent condensation in the exhaust tubing from entering the sensor. - Page 10 Figure 2 Place the gasket on the tube (Figure 3), then the casting on the tube (Figure 4). Slip a clamp on one side and lightly tighten. Slip the second clamp on and lightly tighten (Figure 5). It is necessary to use a small amount of anti-seize on the threads of the T bolt clamps to prevent thread damage.
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Page 11: Coolant Tempature Sensor Installation
COOLANT TEMPATURE SENSOR INSTALLATION Install the Coolant Temperature Sensor into a 3/8” NPT coolant passage in either the intake manifold or cylinder head. Do not overtighten or damage to the cylinder head or intake may occur. It is best to drain the some of the coolant before the sensor is installed. -
Page 12: Sniper Efi Master Fuel System Install
20 FT - 3/8 I.D. EFI Vapor Guard Hose 752066ERL 3/8” Vapor Guard Hose Clamps 750006ERL Post Fuel Filter 10 micron Holley P/N 562-1 or NAPA P/N 3482 Pre Fuel Filter NAPA P/N 3033 -6AN to 3/8” Vapor Guard Hose End 750166ERL... -
Page 13: Fuel Pump And Filter Installation
Fuel Pump and Filter Installation The following section covers the installation of the in-line pump as well as the pre and post filters. The fuel pump MUST be mounted lower than the lowest part of the fuel tank, and as close to the tank as possible. The fuel tank must also be properly vented. - Page 14 Figure 44. The item numbers from section 27.1 are referenced. DANGER! IF DRILLING INTO TANK (RATHER THAN SENDING UNIT), HOLLEY RECOMMENDS HAVING YOUR TANK PROFESSIONALLY CLEANED BEFORE DRILLING. IF YOU CHOOSE NOT TO HAVE THE TANK PROFESSIONALLY CLEANED, DRAIN THE TANK COMPLETELY, LET DRY, AND FILL WITH WATER.
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Page 15: Fuel Line Installation
Fuel Line Installation With the fuel pump, filters, and bulkhead fitting all in place. You are now ready to install the fuel lines. Some connections will use hose clamps (Item 3), while others will use AN hose ends (Items 7) These connections are noted in. Be sure to read and thoroughly understand all steps, notes, and hose assembly instructions below before proceeding with the fuel line installation. -
Page 17: Ecu Wiring Overview
ECU WIRING OVERVIEW The Sniper EFI throttle body comes with sensors pre-wired for easy installation. The illustrated diagram below is intended as an overview of how the system should be wired. Remember, the main ECU power and ground must be connected directly to the battery AFTER all other wiring installation has been performed. -
Page 18: Basic Wiring Installation
Used to drive an aftermarket tachometer Digital Gauge Output Used to drive Holley EFI analog gauges via 554-130 Gauge Module 8 Pin Connector (Applies to PNs 550-852, 550-853 & 550-854) – Mating Harness PN 558-492 8 wires are populated. Color... -
Page 19: General Wiring Reference
GENERAL WIRING REFERENCE An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Sniper EFI contains multiple processing devices that require clean power and ground sources. The wiring for them must be installed in such a manner that they are separated from “dirty”... -
Page 20: Connecting Sniper Efi Touchscreen Lcd To Sniper Efi
Connecting Sniper EFI Touchscreen LCD to Sniper EFI Connect the 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 and secure the excess wire away from hazards. - Page 21 UNUSED WIRES As you finish the installation of your Sniper EFI you will likely have unused wires. These wires need to be properly taken care of before installation is considered complete or you may end up with problems down the road. You have two options on how to properly handle these wires.
- Page 22 Option 2: Trim and Wrap Wire Required tools: Wire cutters Adhesive heat shrink tubing Heat source (heat gun or other) Procedure Disconnect the battery terminals. Cut the end of the wire so that there is no bare copper showing. NOTE: Make sure you leave enough length on the wire that you will have room to crimp or solder it at a later date should the need arise.
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Page 23: Non Timing Controlled Ignition System Wiring
NON TIMING CONTROLLED IGNITION SYSTEM WIRING Coil (-) [no timing control] This Yellow wire marked “Coil-” is an RPM input wire used for the following applications: A stock type mechanical advance distributor with a stock inductive ignition coil. Examples of this would be any older style points distributor. -
Page 24: Ignition Box Tach Output [No Timing Control]
Ignition Box Tach Output (No Timing Control) This requires use of the Ignition Adapter / Purple Wire that comes packaged with the main power harness. If you are using an aftermarket Capacitive Discharge (CD) ignition system such as a MSD, Accel, or others, you need to connect to the “Tach Out”... - Page 25 For additional instructions on how to setup a Sniper EFI using a CD ignition box please reference this helpful video. https://www.youtube.com/watch?v=1EFiTBQ9DvI...
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Page 26: Timing Controlled Ignition System Wiring
Holley recommends that those who wish to use the Sniper’s timing control feature first get the engine running without timing control. Splitting the timing control into a secondary process will add very little time to the total install, but could significantly help with trouble shooting, should it be needed. - Page 27 Balancer Diameter Distance 6” 3/4” 7” 15/16” 8” 1-1/16” Remove spark plug wires and all other wiring/vacuum hoses from distributor. Remove distributor hold-down. Lift the distributor upwards and remove. Distributor Lock Out Procedure Remove the rotor from the distributor. Remove the advance components including the springs, weights, lock nut, and the advance stop bushing from the advance assembly.
- Page 28 Note: If no shims were required, use one beneath the washer of the Lock-Out Hold Down Screw. Install The Adjustable Rotor 1. Install the adjustable rotor MSD PN 84211 or PN 8421 on to the distributor shaft (See note below for applications) 2.
- Page 29 Connect the 2 wire connector on the distributor to the matching connector on your Sniper EFI power harness. Connect the white points output wire either to the Holley coil driver module or the Points input wire on your ignition box. Refer to the following wiring diagrams to complete the wiring.
- Page 30 MSD (Mag) Distributor w/ Direct Drive Coil MSD (Mag) DISTRIBUTOR W/ CAPACATIVE DISCHARGE BOX (Such as MSD 6AL)
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Page 31: Holley Dual Sync Distributor [Timing Control]
Sniper installations utilizing timing control. NOTE: It is recommended that you use a Holley Dual Sync distributor if you are using a Hall Effect input for your rpm signal. However, Sniper EFI will accept a 1x per fire hall effect signal from other devices. It is up to the customer to verify compatibility and proper installation procedure with anything other than a Holley Dual Sync distributor. - Page 32 Make sure that the drive shaft meshes and the distributor fully seats. Next, connect the 10 pin distributor connector to the Holley #558-493 adapter harness. Note: If you have not already completed your installation of the 558-493 harness please do so before continuing.
- Page 33 Clockwise Rotor Rotation: (See chart to determine what direction your distributor rotates.) For engines that have the rotor rotating clockwise, turn Slowly turn the housing clockwise until the Crank LED the housing until the rotor contact is pointed at the goes OFF (Figure 3).
- Page 34 Install the cap and install the #1 plug wire. Install the rest of the plug wires based on the engine’s firing order and rotor rotation. Reconnect the coil power and ground connection. For additional instructions on how to setup a Sniper EFI using a Holley Dual Sync Distributor, please reference this helpful video.
- Page 35 https://www.youtube.com/watch?v=O5_089Q39CA...
- Page 36 Direct-Drive Coil WIRING W/ Holley Dual Sync Distributor Holley Dual Sync Distributor WIRING W/ and CAPACATIVE DISCHARGE BOX (Such as MSD 6AL) HOLLEY DUAL SYNC DISTRIBUTOR PINOUT: If custom wiring the distributor, use the following pinout: Connector Location Channel...
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Page 37: Handheld Navigation
HANDHELD NAVIGATION Possible Screens The 3.5” handheld utilizes a touch screen display. All navigation is done through “touching” an icon or button on the screen. The following is an overview of the different types of adjustment screens that are used in the display, and that may be utilized when tuning or making selections. - Page 38 Graph Options: Digitally: Selecting this option enables slider bar adjustment of individual data points on the graph or the entire curve. Graphically: Selecting this option enables single point or whole curve adjustment. A stylus may be used to select and drag data on the graph screen. Entire Curve: Selecting this will ‘lock’...
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Page 39: Initial Efi Setup
INITIAL EFI SETUP Calibration Wizards Turn the ignition key to the “run” position. This should apply 12+ volts to the Pink wire in the ECU harness and will power the Sniper EFI Touch Screen LCD. The Home Screen (figure below) should appear. The Home screen contains icons which will navigate to different functional features of the 3.5”... - Page 40 To Run the Wizard see the following: STEP 1 Select WIZARD from the main menu - Select your Sniper system type STEP 2 -Press Next Select the number of cylinders your engine has STEP 3 -Press Next Use the slider bar to input the displacement of your engine STEP 4 -Press Next...
- Page 41 Coil (-) [no timing control] CD Ignition Box [no timing control] Magnetic [ECU Controlled Timing] STEP 7 Holley Dual Sync [ECU Controlled Timing] HyperSpark [ECU Controlled Timing] -Press Next -Select power adder type None for Naturally Aspirated Engines (Skip Step 11 &...
- Page 42 - Use the slider bar to input the desired target AFR WOT without boost. (Turbo and Supercharged STEP 11 Power Adder Types Only) - Press Next - Use the slider bar to input the desired target AFR Offset per 7 lbs of boost. (Turbo and Supercharged Poweradder Types Only) STEP 12 The 4 boxes at the bottom show the AFR targets at...
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Page 43: Sensor Verification
Sensor Verification Before starting the vehicle, verify that all of the sensors are reading properly. To do this, turn the ignition key off, and cycle it back on. You should hear the fuel pump come on and run for 5 seconds. Fuel Prime occurs 2.5 seconds after key-on (which is also the amount of time it takes for the 3.5”... -
Page 44: Prestart Checklist
“Syncing”, indicating the ECU is syncing with the RPM signal for an instant, then show an RPM signal. The engine should fire and run and come to an idle. If the engine does not start please use the flow chart at the end of this Manual. If issue still continues then Call Holley Tech service for advice. -
Page 45: Ignition Timing Check [Without Timing Control]
AIR/FUEL RATIO Multi-Gauge AIR/FUEL RATIO Multi-Gauge Engine below 160° F (NoLearn) Engine above 160° F (Learng) Ignition Timing Check (without Timing Control) Verify with a timing light that the timing is set to an appropriate value for particular engine combination. Adjust as necessary. -
Page 46: Throttle Blade Adjustment
THROTTLE BLADE ADJUSTMENT Once engine has warmed up above 160 degrees the throttle blade angle can be set. It is critical for the engine to be above 160 degrees F before setting the throttle blade angle. From the Home screen, Select the Tuning Icon. Then Select Basic and then the Basic Idle Icons. This will allow you to set your basic Engine Idle Speed when engine is up to temperature. -
Page 47: System Setup
From the Home Screen, Select the Tuning Icon. Then Select the System Icon. Next Select the Ignition Setup Icon. Here is where you can change you Ignition settings. Following are examples of what the specific default ignition configurations look like in the handheld. Coil - Magnetic CD Box Holley Dual... -
Page 48: Basic Tuning
The Basic Tuning allows changes to the Air/Fuel Ratio’s, changes to Ignition Timing if the Sniper is configured to as a Magnetic distributor or a Holley Dual Sync ignition setup , Closed Loop and Learning, and basic idle speed. The Advanced Tuning is typically not needed. -
Page 49: Target Afr
Target AFR Allows changes to the Target Air/Fuel ratio at idle, cruise, and wide open throttle (Figure 23). The following are typical values and some tuning notes. Idle Air/Fuel Ratio – Typically between 13.5 and 15.0. Engines with larger cams may need a richer setting for smoothest idle. -
Page 50: Fuel Prime
Fuel Prime Fuel prime is an option that is enabled by default in all of the base calibrations. The fuel prime function injects a small shot of fuel into the intake manifold when the ignition is turned on, wetting the intake and allowing the engine to start much quicker. -
Page 51: Learn Enable/Disable
Learn Enable/Disable The LEARN Enable / Disable menu turns the Self Tuning “On” and “Off”. If enabled, self-tuning is performed. Learning should be enabled when an engine is first run with the Sniper EFI and the tuning process is occurring. After the vehicle is driven under various operating conditions, and is running well, it is advised to limit the amount of learning that can occur in the Advanced Learn menu. -
Page 52: Spark
Spark All Holley base tunes contain timing curves that will allow the engine to run, however the ignition timing at idle, cruise, and wide open throttle can be adjusted independently from each other to compensate for different engine combinations, elevation and climate extremes. -
Page 54: Engine Setup
Engine Setup These parameters should be all properly pre- set when you went through the Wizard Process. They can be modified here, and if the Key Icon is next to the Parameter, the change will not take place until the ignition is cycled. KPA to Engine Vacuum at Sea Level Manifold Vacuum (inHg) Number of Cylinders: Adjust the number of cylinders of the engine... -
Page 55: Ignition Setup
Ignition Setup These parameters should be all properly pre- set when you went through the Wizard Process. They can be modified here. Note: If the Key Icon is next to the Parameter, the change will not take place until the ignition is cycled. Ignition Type: Change the calibration for different ignition setups Reference Angle (Timing Control Configurations Only): This is the value in crank degrees of the distributor's crank pulse. -
Page 56: Advanced Tuning
ADVANCED TUNING From the HOME MENU, select TUNING, and ADVANCED. There are five areas you can modify; ADV FUEL, CLOSED LOOP, ADV. LEARN, ADV. IDLE and LAUNCH. These are reviewed below. The Advanced Tuning areas typically won’t ever be needed to be changed. However, after getting used to the Sniper EFI system, there may be some fine tuning of various parameters that you’d like to perform. - Page 57 Closed Loop CLOSED LOOP OPERATION relies on WBO2 sensor readings. The Sniper EFI system uses these readings to analyze ‘real time’ running conditions. The data obtained by the ECU is then used trim fuel flow to achieve the targeted air fuel ratio (AFR).
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Page 58: Iac Rampdown
NOTE: Contact Holley Tech Support if you have any questions regarding IAC settings. Selecting IAC RAMPDOWN brings up the following menu with four choices, IAC HOLD POSITION, IAC RAMP DECAY, IAC RAMP START, and IAC KICK. These are reviewed below: ... -
Page 59: Idle Spark
IAC Speed This menu is used to select the type of IAC motor application that is being used. This selection drives the background parameters that control the IAC motor. These parameters have been fine tuned for each of these applications, eliminating the need for the user to perform further modifications IAC Startup These parameters control the position of the IAC when the engine is cranking and immediately after it starts. -
Page 60: Idle Speed
Idle Speed Idle speed will allow you to change the target idle speed for different coolant temperatures. Launch Sniper EFI has a secondary rev limiter and the ability to retard the ignition timing after a trigger point. These functions are typically used for drag racing. 2 Step This allows for a secondary rev limiter when the Sniper EFI sees a ground on one of the inputs. -
Page 61: Sniper Efi Monitor
SNIPER EFI MONITOR Sniper EFI allows the user to monitor different channels using the 3.5” TSLCD. These values can be viewed by pressing Monitor from the main Sniper EFI menu. The channels can be configured for the specific application the Sniper EFI is being used with and personal preference. -
Page 62: Changing Monitor Channel Scaling
Changing Monitor Channel Scaling You can change the scale and background warning activation thresholds on the data monitor channels Press the “Monitor” icon from the main menu Press the “Channel Scaling” icon Example: Air/Fuel Ratio: Large Round Sweep from 8.0-18.5AFR Red Background when Leaner than 16.0 and Richer than 10.5 Yellow Background when between 15.0-16.0 AFR... -
Page 63: Nitrous Tuning On Handheld
Press the “Change channels and gauges” icon to change which channels and how they are displayed within the layout chosen in step 5. Press the “Multi-Gauge” icon from the Monitor Menu After you are satisfied with the customization selections press save and look at the dash you have custom created. -
Page 64: Tuning Definitions
TUNING DEFINITIONS Basic : Basic Fuel Typically between 13.5 and 15.0. Engines with larger cams may Target air fuel ratio need a richer setting for smoothest idle. at idle Typically between 13.5 and 15.5. Engines with larger cams may Target air fuel ratio need a richer setting for smoothest operation. - Page 65 Basic : Closed Loop / Learn This menu enables or disables closed loop operation. There is typically no reason to turn off closed loop operation unless you Closed loop suspect an oxygen sensor problem and want to disable the enable/disable sensor.
- Page 66 Tuning : System The OUTPUT screen allows for the Fan #1 and Fan #2 ON and OFF temperatures to be adjusted. The ON temp needs to always be a higher value than the OFF temp. Use a difference of at Fan #1 On least 5 degrees so they aren’t cycling excessively.
- Page 67 This gets the commanded static timing value that has been set previously, if user navigated away from static timing check screen and the ignition has not been cycled. Static Timing This sets the commanded timing to the chosen value This clears the static timing value Clear Close This closes the Static Timing menu...
- Page 68 Advanced : Closed Loop This menu enables or disables closed loop operation. There is typically no reason to turn off closed loop operation unless you suspect an oxygen sensor problem and want to disable the sensor. Closed loop enable Note: Self-Tuning requires closed loop operation to function / disable The maximum percentage the ECU is allowed to deviate (+/-) from the base fuel calibration in order to maintain the commanded target...
- Page 69 Advanced : Adv Idle This is the position the IAC motor will “hold” or “freeze” at when the TPS moves above idle (when TPS becomes greater than 0%). If IAC hold position it is too high, the engine RPM will “hang” and not return to idle. This is the time (in seconds) it takes for the IAC to return to the IAC Ramp Decay target idle range of movement.
- Page 70 Advanced : Launch Rev Limiter #1 Enable or Disable Rev Limiter #1 Enable Rev Limiter #1 RPM set point for Rev Limiter #1 2-Step Rev Limiter #1 Choose the input wire used on the 10-pin harness Input Launch Retard Enable or Disable the programmable launch retard Enable Launch Retard Use this to edit the launch retard curve...
- Page 71 Super Sniper : Nitrous If using Sniper for Nitrous Control, this will Enable or Disable the Disable Stage Minimum RPM required for NOS activation Min RPM Maximum RPM allowed for NOS activation. Any RPM above this Max RPM will turn off the stage. Activation This will delay the activation by the amount selected.
- Page 72 Super Sniper : Advanced These tables require software for initial configuration and are Enable/Disable intended for advanced EFI users. Table Name These tables require software for initial configuration and are (display only) intended for advanced EFI users. Table Type (display These tables require software for initial configuration and are only) intended for advanced EFI users.
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Page 73: Datalogging & File Transfers
DATALOGGING & FILE TRANSFERS For video instructions on how to take a data log and view the datalog with the Sniper EFI system reference this helpful video: https://www.youtube.com/watch?v=rHjLwJQ45Kw&list=PLNMSNx7tRu2sxs6NmwrT3Gi-oO2x0ea Taking a Datalog with the 3.5” TSCLCD 3. To turn off Data Logging press “Stop Log” 1. -
Page 74: Downloading Global Configuration From Sniper Efi Throttle Body To Sd Card
Downloading Global Configuration from Loading Calibration into Sniper EFI ECU Sniper EFI Throttle Body to SD card: Press “File” icon from the Main Menu 1. Press “File” icon from the Main Menu Press the “Global Configs” Icon 2. Press the “Global Configs” Icon Highlight the Configuration you would like to load into the Sniper EFI (making it highlight in Blue). -
Page 75: Laptop Support
Put the saved Configuration from SD card (in Saved GCF folder) in the Sniper EFI Config File Folder, this is in your Documents folder if the Sniper Software was installed in the default location This PC > Documents > Holley > Sniper > Config Files Open Sniper EFI Software, and click “Open Config File” icon... -
Page 76: Viewing Datalog With Sniper Efi Software
Choose the saved Configuration you are wanting to open Calibration can be viewed and Modified using the Sniper Software. It can be saved directly to the SD card or to the Config Files folder. If saving to the Config Files Folder a copy of the tune will also need to be placed on the SD Card to Transfer it to the Sniper EFI via the Handheld. -
Page 77: Troubleshooting
“Open” Button. The data log will open to be viewed. TROUBLESHOOTING Troubleshooting Guide Holley has created a troubleshooting flow chart to help customers with issues they may be having. This can be found on www.holley.com. Here is a direct link to the Troubleshooting Guide. http://documents.holley.com/199r11369.pdf Sensor Verification Verify all sensors are reading properly on the handheld. - Page 78 Wideband Oxygen Sensor Status – Shows status of wideband oxygen sensors. Text Description … Signifies that sensor channel is not enabled. Init.. First shown for an instant when the system is powered on. Displayed so quickly you will likely not see this.
- Page 79 Technical Support: 1-866-464-6553 © 2018 Holley Performance Products. All Rights Reserved. Tous Droits Réservés. 199R11321 Revision Date: 5/24/2019...
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