Cranking

Cranking settings

Cranking RPM limit

This sets the RPM limit below which the ECU will use cranking fuel and ignition logic, typically this is around 350-450rpm. set cranking_rpm X

Fuel

Injection mode

This is the injection strategy during engine start. See Fuel/Injection settings for more detail. It is suggested to use "Simultaneous".

Cranking fuel table

For cranking either use the specified fixed base fuel mass, or use the normal running math (VE table).

Ignition

Timing Advance mode

In Constant mode, timing is automatically tapered to running as RPM increases. In Table mode, the "Cranking ignition advance" table is used directly.

Fixed cranking advance

Ignition advance angle used during engine cranking, 5-10 degrees will work as a base setting for most engines. There is tapering towards running timing advance set cranking_timing_angle X

Fixed Cranking Dwell

Dwell duration while cranking

Advanced

Flood clear

When enabled if TPS is held above 95% no fuel is injected while cranking to clear excess fuel from the cylinders.

Faster engine spin-up

If enabled, try to fire the engine before a full engine cycle has been completed using RPM estimated from the last 90 degrees of engine rotation. As soon as the trigger syncs plus 90 degrees rotation, fuel and ignition events will occur. If disabled, worst case may require up to 4 full crank rotations before any events are scheduled.

Use Advance Corrections for cranking

This enables the various ignition corrections during cranking (IAT, CLT and PID idle). You probably don't need this.

Separate Flex Fuel cranking table

Enable a second cranking table to use for E100 flex fuel, interpolating between the two based on flex fuel sensor.

Cranking Air Amount vs CLT

ETB idle maximum angle

This sets the range of the idle control on the ETB. At 100% idle position, the value specified here sets the base ETB position.

After-start enrichment

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Priming pulse

Disable fuel pump prime on power on

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Disable injector prime pulse

Do not prime injectors

Fuel pump prime delay after power

How long to delay fuel pump prime from ign on

Injector Priming delay (after fuel pump delay)

Delay to allow fuel pressure to build before firing the priming pulse.

Cranking Base Fuel (Engine Cycle vs CLT)

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CLT Cranking Fuel Multiplier (E0)

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CLT Flex Cranking Fuel Multiplier (E85)

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CLT Cranking ignition advance

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