5.2 Basic engine constants 5 SETTING UP A BASIC CONFIGURATION
We recommend that you do not have the ignition coils hooked up while doing a basic setup on the MS3Pro.
During the setup stage, you will define what type of ignition hardware that you are using, but if the ignition you have
doesn’t work with the default settings, you may overheat your ignition module and damage it before you are done
with your setup.
5.2 Basic engine constants
First, we’ll go over the basic settings you need to go through for starting the engine. The following are the most
essential settings. We’ll come back and go over the other menu items later. The first stop is under the Basic /
Load Settings menu. Select Engine and Sequential Settings. Here is what the settings do.
• Required Fuel: This is your base pulse width. It is the amount of pulse width the engine would theoretically
need at 100 kPa and 100% volumetric efficiency. While you can enter it directly, we recommend using the
calculator that the “Required Fuel...” button pulls up. Here, you will enter the engine displacement, number
of cylinders, injector fuel rate, and air/fuel ratio. Usually the air/fuel ratio should be stoichiometric for the
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 52
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