3
Sniper EFI Wiring Harness Overview
Before you get started
– Are you experiencing any underlying problem?
Holley Performance highly recommends the following items be checked and/or corrected prior to installation of your
new Sniper EFI system to ensure optimum performance from your engine.
Many times a carburetor is looked at as the prime culprit or the main cause for a myriad of other engine-related difficulties that
might exist. Therefore, it’s best to check and verify the condition of the complete engine system before proceeding with an EFI
Conversion. There should be no
vacuum leaks, the ignition timing should be properly set, and the engine should be in
sound mechanical condition
.
Converting to
EFI won’t cure bad valves, damaged head gaskets, worn piston rings, or
cracked and leaking vacuum lines.
INSTALLATION:
NOTE:
Please see the enclosed instruction manual for complete removal, installation, and tuning instructions.
NOTE:
This Quickstart Manual covers
NON-Timing Control Ignition Options
. We highly recommend first starting the engine
with one of the two NON-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 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. Do NOT Connect the switch 12v wire to a source such as the ignition coil, or starter
solenoid.
WARNING
– Disconnect the NEGATIVE battery cable before any work is performed to the vehicle.
1.
Start by labeling all vacuum lines for easy identification. If any lines appear damaged, now is the time to replace them.
Next, remove the carburetor, clean the gasket mating surface, and install the provided intake flange gasket on the intake
manifold.
2.
Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Install the hold down nuts and snug
down progressively in a “criss-cross” pattern (60-80 in./lbs.). Depending on your application, this is also the time to install
your throttle bracket and transmission kickdown brackets provided with your Sniper EFI Kit. You may be able to re-use the
stock style throttle stud or transmission studs from your carburetor. If not, we have provided several universal throttle
ball/stud options.
Содержание Sniper EFI 550-510
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