The settings for Engine size and injector size should be set to match what the engine really is.

Increasing the displacement or decreasing the injector size increases the fuel value of the VE Delphi numbers. This is often referred to as "adjusting resolution". These parameters may need to be adjusted to alter the VE table maximum values. This should be analyzed, adjusted, and programmed to the ECU before any tuning or data collection because it has a system wide impact. VE value of 80 at 96.7 ci is leaner than VE value 80 at 103.3 ci. VE value 80 at Injector Size 4.35 is richer than VE value 80 at Injector Size 5.0. VE or Volumetric Efficiency tables are explained in more depth here.

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