5.3 Ignition settings 5 SETTING UP A BASIC CONFIGURATION
– Off - Use batch injection. The channels are divided into two groups, and all injectors in a group are
squirted simultaneously. This mode would typically be used if your engine has an ignition input like a
HEI distributor that provides for no cylinder identification.
– Semi-Sequential - Injects once every rotation, firing injectors in pairs. The injectors are timed, so you
can set the angle at which they fire. Injectors should be wired in the same manner they would be wired
for fully sequential injection.
– Fully Sequential - Use fully sequential injection. In this mode, outputs A-H are squirted in sequence, so
care must be taken to use the correct wiring for the engine’s firing order. For example, for a four cylinder
engine with firing order 1-3-4-2, the following wiring should be used:
*
Output A - Cylinder 1
*
Output B - Cylinder 3
*
Output C - Cylinder 4
*
Output D - Cylinder 2
Note that to use semi-sequential or sequential injection, you will need to select a spark mode that supports se-
quential injection. See ignition settings for more details.
• Angle Specifies - The MS3Pro has a tunable injector timing table, and this setting determines how the
MS3Pro interprets that table.
– End of Squirt - The angle specified in the injector timing table specifies the angle of the end of each
squirt. This should be used by most people for most engines.
– Beginning of Squirt - The angle specified in the injector timing table specifies the angle of the beginning
of each squirt.
– Middle of Squirt - You can also use the injector table to specify the mid-point of the injection event if you
find this easier to tune.
• Injector Trim - Turning this on allows adjusting the injectors separately using injector trim tables.
• Firing order - The firing order should be set to the firing order that your engine uses. It does not affect the
order in which the outputs are triggered. Instead it is used to associate an injector trim table with a particular
physical output so that when injector trim is applied, it is applied to the correct cylinder. It is also used if
closed-loop EGO is being done per-cylinder.
5.3 Ignition settings
Next, proceed to the Ignition Settings menu and select Ignition Options / Wheel Decoder to set up how the
MS3Pro gets its RPM input and controls the ignition.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 54
To Next Page
Loading...