Cranking fuel PW Multiplier vs time

Definition: Cranking Fuel Pulse Width Multiplier VS Time

Platform: Fox

X Value: Time in seconds for cranking.

Min Value: 0

Max Value: 8192

Y Value: Multiplier -- 1.x leans A/F & 0.xxx enrichens

Min Value: 0 [rich]

Max Value: 1.99 [lean]

Description:
Enrichen or Lean the result of the Startup Fuel table subtracted from the Base Fuel table. Values of 1 or higher lean the A/F mixture during cranking and a value lower than 1 increases the A/F ratio

Base Fuel Table - Startup Fuel Table = Cranking A/F ratio

14.64 - 1.785 = 12.855
Hints:
When using injectors larger than 36lb's you should use the Startup Fuel Table, but you can use this multiplier to cut the fuel delivery and help with hot starts.

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This function is used to modify the Cranking fuel PW vs ECT values. The x value is the time in seconds, the y is the multiplier. This allows across-the-ECT-range pulsewidth changes without having to enter new ECT-dependent pulsewidths.
This is useful for reducing the pulsewidth when using larger injectors. This dramatically improves engine starting, and the surge that comes right after starting with larger injectors. I suspect the surging is burning latent fuel from a wet manifold that was over-doused with fuel. Set the multiplier in proportion to the size of the new injector.
For example: If going from 19 to 36 lb/hr injectors. You might use the following function. 19/36 =c

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The smallest pulsewidth appears to be about 2ms. A lower multiplier will not lower the pulsewidth below 2ms. However, a zero multiplier produces a 0ms pulse.
Using the 0 multiplier you can introduce a period where the engine is cranking, but the fuel injectors are not introducing fuel—just like WOT cranking without holding the throttle wide open.
This can be useful for cars running very large injectors, such that a 2ms pulsewidth will still flood the engine on starting.
For example: I use this on my car with 50 lb/hr fuel injectors. Without this setting, it will not start when its warm—I will have to start it at WOT to clear the flooding