7.2 Fuel Settings 7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL
• Staged Injection First Parameter - This setting enables staged injection and sets the primary staging pa-
rameter, which is used to determine when to engage the secondary injectors. This setting includes the
following options:
– Off - Staging disabled.
– RPM Stage at a specific RPM.
– MAP Stage at a specific MAP.
– TPS Stage at a specific throttle position.
– Duty Stage at a specific primary injector duty cycle.
– Table Stage based on the table included in the dialog.
For table-based staging, 0% means not staged at all, and 100% means fully staged. Anywhere between 0% and
100% means partially staged. The firmware calculates the primary and secondary pulse-widths based on the
injector sizes specified elsewhere in the dialog.
• Primary Injector size (cc) - Size of primary injectors in cubic centimeters.
• Secondary Injector size (cc) - Size of secondary injectors in cubic centimeters.
• Transition fully to secondaries - This setting is used to determine whether the fully staged state means that
the primary and secondary pulse-widths are equal, or if the fully staged state means that primaries are shut
down completely and staging transitions fully to the secondary injectors. The following settings are possible:
– Off - The fully staged state means that the primary and secondary injector pulse-widths are equal.
– On - The fully staged state means that the primaries are shut down, and staging transitions fully to the
secondary injectors.
• Secondary Outputs - This setting controls whether the regular sequential outputs are used for secondaries
or the I/J outputs on the gray connector are used. You can use sequential injectors on up to four cylinders.
The following options are possible:
– Use Inj A -H if possible - Use the standard outputs A through H. The second stage is fully sequential
with this setting. Can be used for up to four cylinders.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 153
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