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Shipping & Returns

AMPEFI will make every effort to ship all in stock orders placed by 2pm EST, on the same business day. If your order is not in stock you will be notified during the checkout process prior to completing your order. We strive to keep all items in stock and will communicate clearly with you about…

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About Us

AMP EFI is the home of MS3Pro Engine Management Systems. Who are we? AMP EFI is a high performance engine & powertrain control systems brand focused on manufacturing professional, out-of-the-box solutions for today’s high I/O, high horsepower drag and road racing combinations.  Our systems are proudly manufactured and supported in the USA. What do we…

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Blog Article

Under Cover: A Look Inside MS3Pro Ultimate’s Programmable, On-board Peak & Hold Injector Driver

by Ben Berusch, Technical Supervisor, Hoffmann Innovations, Inc. The purpose of this article is to demonstrate the AMP EFI MS3Pro Ultimate standalone engine control unit’s peak and hold injector control strategy to safely and properly control various types of automotive port injectors. I am specifically going to use the MS3Pro Ultimate in my demonstrations, but…

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Blog Article

MS3Pro Helps Revive an Urban Legend: A Prototype GM LS V10

In January 2016, KC Maxx Performance & VC Fabrication inquired about MS3Pro capabilities and interest in being involved in this project.  Who wouldn’t be interested in a snuffed TOP SECRET GM Project? Some intrepid GM engineers it seemed, thought that the General needed a V10 to replace the aging 454 in the truck division. Having…

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Product

USB to Serial Adapter – Trouble Free!!

SKU: USB-2920

This FTDI chipset USB to Serial Adapter has been tested and works properly with all of our ECU products and all versions of TunerStudio on a wide range of operating systems.  This is probably the most common item we see people come back for after a purchase, so we highly recommend grabbing one now!  We…

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