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MS3Pro by AMP EFI

The MS3Pro by AMP EFI engine management systems are made in the USA. We offer full standalone control of engine and many popular transmissions. AMP EFI ECUs are often used in road race, drag, rock crawling, autocross, land speed, and other types of racing. We offer the tuner full control over fuel and ignition curves. MS3Pro will control sequential fuel up to 12 cylinders. Many OEM and aftermarket ignition systems are compatible. MS3Pro by AMP EFI supports over 50 different crank trigger setups.  MS3Pro is popular with naturally aspirated, nitrous, and forced induction applications.  A 4-bar MAP sensor is included as standard, as well as a 1-bar baro sensor. Adding an external MAP sensor will allow higher than 4-bar boost.

Advanced features include:
*On board datalogging with time stamps
*Traction control
*2/3-step
*Transmission brake control with creep
*Single or dual gate (CO2) boost control by single wastegate or dual gate
*Wet or Dry nitrous control, stage or progressive
*VVT control up to 4 continuously variable camshafts
*Closed loop EGO control, up to per-cylinder
*Compatibility with all common wideband o2 systems
*CANbus functionality
*Programmable peak and hold injector drivers with up to 8 amp peak / 2 amp hold (Ultimate only)
*Plus much, much more

AMP EFI offers 2 MS3Pro models. The Evo offers 12 high impedance injector outputs. The Ultimate offers 10 peak and hold injector outputs. The Ultimate outputs are programmable for 4 or 8 amps peak current and are compatible with high and low impedance injectors. All MS3Pro by AMP EFI ECUs are manufactured in Gainesville, GA, USA.

EPA, CARB & Emissions Disclaimer- All ECU's are for race purposes only. It's your responsibility to remain in compliance with all federal, state, provincial, or other laws that apply to you.

Showing 17–32 of 34 results

  • MS3Pro ULTIMATE Center Harness

    5 out of 5
    $59.00

    MS3Pro ULTIMATE adds nearly 50% more I/O with the addition of a third AMPSEAL 23-pin, 8' flying lead.  Harness arrives with color-coded, printed wires per the pinout below (black center connector) ***Center Harness ONLY in this listing, intended for p...

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  • MS3Pro EVO Uncrimped AMPSEAL Connectors

    5 out of 5
    $64.99

    Making your own harness? This plug and pin kit features the MS3Pro AMPSEAL white & gray connectors plus 75 pins- more than enough for making your own MS3Pro EVO or 1st Gen harness. MS3Pro ULTIMATE 3-connector AMPSEAL Kit available here

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  • MS3Pro ULTIMATE Uncrimped AMPSEAL Connectors

    $89.99

    Planning to make your own ULTIMATE harness? This plug and pin kit features the MS3Pro ULTIMATE AMPSEAL white, black & gray connectors, plus 100 pins- more than enough for making your own! (EVO/ 1st Gen 2-connector AMPSEAL Kit sold separately)

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  • MS3Pro 1st Gen Wiring Harness Upgrade (for ULTIMATE and EVO)

    $23.99

    If you have a previously installed MS3Pro harness (1st Gen flying lead or LS Drop On Harness) and want to upgrade to MS3Pro EVO or ULTIMATE ECU, the upgrade path is simple.  However, complete functionality will require a few basic changes to your 1st Ge...

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  • USB to Serial Adapter – Trouble Free!!

    4.88 out of 5
    $28.99

    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 purch...

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  • Tuning Cable – MS3Pro EVO & ULTIMATE ECU’s

    $31.50

    Connect MS3Pro ULTIMATE or EVO directly to your laptop with this 4 pin M12 serial cable.

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  • Sealed resistor – 10K

    $4.50

    We've wrapped a 10K, 1/4 watt resistor in a sealed and strain-relieved package for underhood use. Red heat shrink tubing with yellow leads. Typically used as a shunt resistor with VR sensors.

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  • Sealed resistor – 1K

    $4.50

    We've wrapped a 1K, 1/4 watt resistor in a sealed and strain-relieved package for underhood use. Blue heat shrink tubing with blue leads. Suggested uses include a pull-up resistor for Hall effect and optical sensors, and for spark outputs C and D on a Mic...

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  • Electronic Boost Control (EBC) Solenoid Kit

    5 out of 5
    $62.99

    Enhance your boost control with our high-performance electronic boost control solenoid, compatible with MS3Pro, MS3X, MSPNP, DIYPNP, and other DIY Style MegaSquirt EMS systems (with the appropriate mods). This solenoid adjusts boost pressure to your turbo...

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  • MS3Pro Ultimate Standalone Engine Management System w/ Harness

    5 out of 5
    $1,749.00

    Experience the MS3Pro ULTIMATE by AMP EFI, featured in Street Outlaws No Prep Kings contestant, The Hulk. Developed from the MS3Pro 1st Gen platform, the MS3Pro ULTIMATE brings NEXT LEVEL capability to MS3Pro's staggering feature set beginning with a...

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  • MS3Pro ULTIMATE Standalone EMS – ECU Only

    $1,499.00

    Experience the MS3Pro ULTIMATE by AMP EFI, featured in Street Outlaws No Prep Kings contestant, The Hulk. MS3Pro ULTIMATE by AMP EFI brings NEXT LEVEL capability to MS3Pro's staggering feature set beginning with a new high quality aluminum IP65 rated...

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  • MS3Pro EVO Standalone Engine Management System w/ Harness

    5 out of 5
    $1,299.99

    **IN PRODUCTION 2-3 WEEK LEAD TIME** Introducing MS3Pro EVO. (supersedes 1st Gen MS3Pro) MS3Pro EVO is an evolution of the original MS3Pro ECU- a scaled up, more capable MS3Pro due to shared technology with big brother, MS3Pro Ultimate.  MS3Pro EVO ...

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  • MS3Pro EVO Standalone Engine Management System – ECU Only

    $1,149.99

    **IN PRODUCTION 2-3 WEEK LEAD TIME** Introducing MS3Pro EVO by AMP EFI (ECU only)  MS3Pro EVO by AMP EFI is an evolution, not a revolution- a scaled up, more capable MS3Pro due to shared technology with big brother, MS3Pro Ultimate.  MS3Pro EVO by A...

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  • MS3Pro 1st Gen Standalone ECU with 8′ Wiring Harness

    5 out of 5

    IMPORTANT PRODUCT UPDATE**  MS3Pro Gen1 has been discontinued and superseded by MS3Pro EVO effective May 1, 2017.  This product page, including documentation, downloads & product FAQ tabs below, remains active for archive purposes.   Compare MS...

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  • MS3Pro 1st Gen Standalone ECU Only

    IMPORTANT PRODUCT UPDATE** MS3Pro-ECUPKG has been discontinued and superseded by MS3Pro EVO effective May 1, 2017.  This product page, including documentation, downloads & product FAQ tabs below, remains active for archive purposes.   Compare M...

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  • MS3Pro Module

    5 out of 5
    $929.99

    The MS3Pro Module puts the MS3Pro circuitry on a board where we've replaced the AMPSEAL connectors with 0.100" pin headers.  What's it for?  The MS3Pro Module is the core for our MSPNP-Pro, but we're also making them available to the public.  MS3Pro M...

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