7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL
7 Additional items: Beyond basic fuel and ignition control
The MS3Pro will control a lot more than basic fuel and ignition. In this section, we’ll cover what else the MS3Pro
can do, one menu screen at a time. We’ll skip the menu screens that were set up in sections 5 and 6, and cover
the rest here.
7.1 Basic / Load Sections
This section covers many basic aspects of the engine setup as well as very commonly used input and output
features.
7.1.1 General Settings
7.1.1.1 Barometric settings
• Barometric correction For vehicles that experience altitude variations, this setting enables an automatic
adjustment to fueling. See also the baro correction curve.
– "None" - disables the feature, if adjustment is not required or desired.
– "Initial MAP reading" - takes a reading from the primary MAP sensor at power on and uses that single
value. If your altitude changes greatly during a single journey, you may need to stop and restart to take
a fresh reading. Caution - engines that have severe voltage drops while cranking may cause the ECU
to reset while cranking, resulting in a false low barometric pressure reading.
– "Two independent sensors" - uses a second sensor which is sampled in real time to update the baro-
metric correction continuously.
• Realtime baro port - when two sensors are enabled, this selects the input port you have the second sensor
wired to.
The next two settings are used to limit false readings in case of sensor failure.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 124
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