Fuel Prime; Closed Loop Enable/Disable - Holley Sniper EFI Stealth 4500 Installation Manual

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. The amount of fuel is based on the engine. This amount of fuel can be increased or decreased by
changing the "Percent" value. If the engine seems flooded reduce this value, if the engine seems to want more fuel,
increase it. Experiment for best results. Typically this value will range from 75-150% with a maximum of 200%.
NOTE: This only injects fuel once at key-on, and will not do it again until the engine has run. This fuel prime occurs 2
½ seconds after key-on. If you quickly turn the ignition key without waiting for 2 ½ seconds, the prime will not occur and
it may take longer for the engine to start.

Closed Loop Enable/Disable

The Closed Loop Enable / Disable menu turns the Closed Loop AFR correction "On" and "Off". It is advised to always
have this enabled.
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