1 INTRODUCTION
8.6.2 Windows firmware loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
8.6.3 Linux firmware loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
1 Introduction
1.1 Overview
Congratulations on your purchase of an MS3Pro! The MS3Pro is a standalone engine management system
capable of running sequential fuel injection on up to 12 cylinder engines. This manual covers the original MS3Pro
ECU.. The MS3Pro is manufactured by AMP EFI, a branch of Hoffmann Innovations, LLC.
This manual is based on the 1.5.0 and later firmware. Documentation for earlier firmware is available at
MS3Pro.com.
1.1.1 Warning labels
Everything comes with warning labels. Let’s get these out of the way.
All parts are sold for OFF ROAD RACE-ONLY ground-vehicle use only, or vehicles that predate any federal and
state emissions control requirements. Aftermarket EFI/EMS systems are not for sale or use on pollution controlled
vehicles. Alteration of emission related components constitutes tampering under the US EPA guidelines and can
lead to substantial fines and penalties. Your state/district may also have specific rules restricting your tampering
with your vehicle’s emissions system. In short, as stated before, our official policy has to be RACE or OFF-ROAD
USE-ONLY in ground based vehicles ONLY.
Race parts are inherently dangerous and may cause injury or damage if improperly modified or altered before
use. Hoffmann Innovations will not be held liable for and will not pay you for any injuries or damage caused by
misuse, modification, redesign, or alternation of any of our products. Hoffmann Innovations will not be held in
any way responsible for any incidental or consequential damages including direct or indirect labor, towing, lodging,
garage, repair, medical, or legal expense in any way attributable to the use of any item in our catalog or to the
delay or inconvenience caused by the necessity of replacing or repairing any such item.
1.1.2 Technical support
AMP EFI technical support can be reached by email at support@ampefi.com. If you are having difficulty with a
particular issue, we recommend sending a data log of the problem and a copy of your tune file with the email, as
these are often helpful for resolving issues. We can also be reached by phone at 678-261-8789.
The AMP EFI team continuously maintains this manual; please use the contact address above if you find any
errors or sections that need to be cleared up.
1.1.3 Copyrights
This manual is copyright 2017 AMP EFI, and contains information used by permission of Bowling & Grippo Soflex
and the MS/Extra Team. You may share this file in its unaltered form or print out copies for your own personal use.
For permission for other uses, contact AMP EFI at the link above.
1.2 MS3Pro components
1.2.1 MS3Pro Engine Control Unit Family
There are currently five types of ECU in the MS3Pro family.
1.2.1.1 MS3Pro (first generation) The original MS3Pro is a universal ECU with the following inputs and out-
puts:
• 10 fuel outputs for high impedance injectors
• 8 logic level spark outputs
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 12
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