Ignition Timing Check [Without Timing Control]; Ignition Timing Check [Ecu Controlling Timing] - Holley Sniper EFI 550-853 Installation Manual

AIR/FUEL RATIO Multi-Gauge
Engine below 160° F (NoLearn)
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. It is critical to have the timing set correctly before the car has been driven with the Sniper EFI. Many
drivability and idle issues can be avoided with a properly timed engine.
Ignition Timing Check (ECU Controlling Timing)
Have a timing light handy as the first step will be positioning the distributor.
1. Turn the key ON to power the system and go to Tuning -> System -> Static Timing. This screen allows you to set
the distributor exactly where the Sniper ECU needs it to be positioned to operate the timing.
2. Start the engine, then move the slider on the screen to 15°, then press SET. Now using the timing light, move the
distributor until you see 15° BTDC on the balancer. Tighten the hold down clamp.
3. Leave the Static Timing screen by pressing CLOSE. This will take you back to the Home screen and the Sniper
will now be controlling the ignition timing. It is important to note that you will not see accurate timing at idle speed
when viewing with a timing light. This is due to ECU calculations. If you rev the engine off idle, the timing will
appear correctly.
4. From the Spark Screen which is located Tuning -> Basic -> Spark, you can adjust the Idle, C369*ruise, WOT and
Cranking timing settings. It is HIGHLY suggested that a timing map using the Sniper EFI PC Software is built for
the particular engine the Sniper EFI is controlling timing on. The Timing map built using the handheld is very
basic and each engine will perform much more optimally with a timing curve built for the specific engine
combination.
Step 1
Step 3
AIR/FUEL RATIO Multi-Gauge
Engine above 160° F (Learng)
Step 2
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