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MS3Pro EVO ECU with 8' Universal Wiring Harness

MS3Pro EVO Standalone Engine Management System w/ Harness

5 out of 5 based on 7 customer ratings
(7 customer reviews)



Includes complete Universal 8′ Flying Lead Harness


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 does not have peak and hold injector drivers, but it does share some increased I/O, an on-board 4-bar MAP, barometric pressure sensor, and 5 diagnostic LED’s.

More Data

No need for a separate data acquisition system, MS3Pro EVO will log up to 64 channels, conservatively, at 330hz. The advanced TunerStudio software provides an intuitive, straight-forward tuning experience for pros and enthusiasts alike with best in class self-learning, self-tuning fuel table strategies to assist you.

More Native Crank & Cam Trigger Support

The MS3Pro EVO is ready to support a wide variety of engines out of the box, with the ability to control anything with up to 10 cylinders with sequential fuel injection or up to 4 rotors.  Over 50 different ignition modes are supported, from mainstream applications like the GM LS Engines (24x and 58x), Ford Coyote (including VVT), Bosch Motronic, and Chrysler Gen III Hemis!

MS3Pro EVO controlled the early hemi awarded ‘Best Appearing Engine’ at the 2017 Engine Masters Challenge presented by Amsoil.  HOT ROD ARTICLE HERE

MS3Pro EVO does MORE than 1st Gen MS3Pro for nearly the same investment, and upgrading is easy!  If you’ve previously purchased a MS3Pro Ampseal grey and white harness, MS3Pro EVO and ULTIMATE are backward compatible with MS3Pro 1st Gen Wiring Harness Upgrade .

MS3Pro EVO Configurable Inputs/ Outputs:

  • 10 Hi impedance injector outputs
  • 8 logic level spark outputs
  • 3 PWM outputs
  • 2 digital outputs
  • 7 analog inputs plus built-in MAP, Baro, and internal ECU temp sensor
  • 3 high current digital/pwm outputs
  • 3 digital frequency inputs
  • 4 variable reluctor conditioned inputs

MS3Pro EVO Features:

  • VE based tuning
    • No Static PW fuel tables with stacks and stacks of ‘correction tables’ required.
    • Very simple/logical approach to calibration minimizes tuning time required!
  • Speed Density, Alpha-N, MAF based tuning & blended algorithms
    • ITB Mode – blends SD and Alpha-N for excellent drivability with naturally aspirated, multiple throttle applications!
    • Custom blended strategies supported, mix/blend strategies to suit any engine
    • Fuel and spark advance algorithms can be set set independently
  • Up to 12 sequential saturated fuel injector outputs
  • Up to 12 cylinder sequential support
  • Any unused injector outputs can be used as high current digital or PWM outputs
  • Up to 8 sequential logic level ignition outputs
    • Supports single or dual coil distributor, wasted spark, and coil per plug
  • 2D or 3D Table Views
  • The tuner can toggle between 2D or 3D table views with a single click
  • Individual cylinder fuel & spark trim tables
    • Per-cylinder, table based corrections for both ignition timing and fueling needs on a cylinder by cylinder basis. Correct for manifold airflow differences and fine tune each cylinder to perfection!
    • O2 sensors can be assigned per cylinder, allowing for perfect tuning and closed loop correction on a per cylinder basis
  • Table Switching
    • 2 sets of user configurable tables for fuel, spark advance, and boost tables
    • Dual Fuel Support
    • Beyond table switching, adds control of 2nd fuel system (pump and injectors), and adds 2nd settings for injector characterization; fuel stoichiometric point; priming, warmup, cranking, and afterstart settings; alternate acceleration enrichment tables; boost tables; and overboost protection settings.
  • VVT Control (4 channels)
    • Open loop VVT control for 2-position camshafts
    • Closed loop control for fully variable camshafts
    • Controls up to 4 total VVT camshafts
  • Generic Wheel Decoder allows for support of nearly any standard trigger/aftermarket trigger pattern. 60-2, 36-1, 8-1, 4-1, pretty much anything!
  • Supports 50+ specialty OEM and aftermarket ignition systems using factory cam/crank wheels and sensors.
    • GM LS 24x
    • GM LS 58x
    • GM 7x
    • Toyota/Lexus 2JZ VVTi
    • Ford EDIS
    • Ford Zetec VCT
    • Chrysler 420A/Neon
    • Chrysler New Hemi 36-2+2
    • Dodge Viper V10
    • Subaru 6/7
    • Subaru 36-2-2-2
    • Mitusbishi 6G72
    • Mitsubishi 4G63
    • GM OptiSpark
    • Nissan SR20
    • Nissan RB25
    • Nissan VQ35DE
    • Nissan QR25DE
    • Yamaha YZF1000
    • Honda TSX/D17
    • Honda KA24A2
    • Honda RC51/S2000
    • Mazda Miata NA
    • Mazda Miata NB1 and NB2 (VVT)
    • Harley Davidson 32-2 V-Twin (uses MAP for phase detection)
    • Not a complete list — Many more supported trigger wheels
  • Support for oddfire and evenfire engines
  • Capable of controlling evenfire, oddfire, piston, rotary, and even radial engines
  • Fuel Only Mode
  • Disables ignition output features for control of fuel injection only
  • Internal SDCard high-speed data logging
    • No need for external datalogger!
    • 8GB standard memory. Easily expandable to 16GB
    • Real time clock calendar system for time and date stamped datalogs
    • Up to 28 channels at 100hz
    • No need to remove SD-Card to pull logs, pull them straight across the serial/USB cable to your laptop!
  • Traction Control – Multiple Strategies
    • Perfect Run (VSS over time)
    • Perfect Run RPM (Slew Control for classes where VSS is not allowed)
    • VSS % slip (compares front to rear or driveshaft speed)
    • Configurable Responses
      • Timing retard/cut
      • Fuel Adder
      • Nitrous Cut
      • Boost Reduction
  • E85 flex fuel sensor input
    • Extremely configurable for excellent performance and drivability regardless of fuel gasoline versus ethanol content.
    • Compatible with easy to find GM flex fuel sensor
    • Configurable flex blend curve allows blending of fuel tables, spark advance tables, afr target tables, alternate start and warmup settings, boost and overboost tables, and acceleration enrichment settings based on the exact concentration of ethanol in fuel
  • Compatible with YOUR wideband O2 controller.
    • You choose the wideband controller you want without being locked down. From cost effective to full lab grade capability.
  • Long Term Fuel Trim
  • OE Style automatic fuel trim to allow for changes in engine over time
  • High Power Time Enrichment
  • Allows for richer mixture after extended time in high power
  • Helps control cylinder and piston temperatures
  • Fully user configurable
  • Multiple Acceleration Enrichment Strategies
    • Basic time based and accel pump style AE
    • Advanced wall wetting model based (X-Tau and EAE) acceleration enrichment options
  • Staged Injection Control
  • Seamless transition to 2nd stage injectors for high power applications
  • Multiple user configurable strategies
  • Nitrous control strategies
    • 2 channels of configurable staged or progressive control
    • Supports wet or dry nitrous systems
    • Add fuel, pull timing, etc.
  • Three-step rev limiter with flat shift
    • Burnout Limiter
    • Launch Limiter
    • Redline Limiter
    • Line lock output
    • Flat Shift allows for No-Lift Shifting (holds RPM between shifts)
  • Trans Brake and Bump Box Control
  • No need for a separate box!
  • User configurable settings and reactions
  • Advanced Launch Control strategies
  • Digital switch based arming
  • Wheel speed based launch arming for rolling starts
  • Configurable timing retard after launch
  • Pit Lane Limiter
  • Speed limiter for pit lane, reduces engine power by spark retard/cut or fuel cut
  • Can limit based on VSS or RPM if no VSS input is available
  • Rally style turbo anti-lag with rotational idle
  • Allows cyclic fuel and spark cut
  • Controls idle valve and configurable outputs for external fuel or air supply
  • Boost Control – Multiple open & closed loop strategies
    • Table based open loop (DC solenoid control)
    • Table based closed loop (Target specific boost pressures by load/rpm)
    • Switchable boost tables for high/low boost options at the flip of a switch
    • Boost by Gear
    • Boost by Speed
  • Sequential shift spark cut
  • Configurable spark and fuel cut during shift
  • Solenoid output control for air shifter/drag application
  • Automatic shift point mode
  • Configurable per gear delay
  • Idle Control – Multiple open & closed loop strategies
    • Simple On/Off Idle Valve
    • PWM 2 or 3 wire valves
    • Stepper Motor 4 or 6 wire valves
  • Water and Methanol Injection
    • Configurable to use a variety of water/meth pumps
    • Table based injection allows for variable water/meth injection based on load and rpm
    • Low fluid level detection safety measures
  • Fuel Pump Control
    • “On/off” control of single or multiple stage pumps
    • PWM control of OE variable speed/pressure pumps
  • Intelligent Knock Detection and Response – 2 channels
    • Dual DSP based knock inputs with bandpass filters and dynamically adjustable gain
    • Noise threshold based
    • Windowed monitoring allows for detection of which cylinder knock occurred on
    • Adjustable ignition retard (course and fine responses)
    • Knock correction per cylinder (sequential ignition must be enabled)
  • Multiple Engine Protection and fault mode strategies
    • Check Engine Light activation (solid and flash codes supported)
    • Low Oil Pressure Warning System (illuminates CEL)
    • Limp Home Mode
    • 5 LED indicators for visual diagnostics
      • 12V main power
      • 5V ref 1
      • 5V ref 2
      • VCC (internal processor power)
      • MIL (check engine light or can be re-purposed as a general output)
    • Set low/high limits for all major sensors and activate engine limp mode or shut down responses
      • Water/Meth Injection Low fluid Level
      • IAT
      • CLT
      • TPS
      • MAP
      • Battery Voltage
      • Wideband O2 / AFR Safety
      • Sync Loss
      • EGT
      • Flex Fuel
      • Intelligent Knock Detection and Correction (see relevant topic above for more info)
  • Generous spare I/O for any standard/custom I/O needs
    • Configurable On/Off (digital) and PWM outputs
    • Control any relay controlled device or solenoid
    • Fan Control (multiple)
    • Intercooler cooling spray (CO2/etc)
    • Torque Converter (TCC) Lockup
    • Auxiliary Fuel Pump
    • Multipurpose/Generic Closed Loop Control Outputs
  • Spare analog inputs for external sensors
  • Supports standard automotive temperature or pressure sensors
  • Air Conditioner Control with feed-forward Idle-Up
  • Proactively increases idle vale duty cycle (PWM valves) or number of steps (stepper valves) before activating A/C compressor
  • Automatic compressor shutoff at programmable throttle position or RPM thresholds
  • Automatic cooling fan activation with A/C, user configurable
  • Cooling Fan Control
  • Programmable fan on and off activation points
  • Can be configured to run fan with engine running only, or when engine is running and not running
  • Feed-forward idle up for use with large, high demand fans
  • Configurable fan deactivation based on TPS or VSS
  • Alternator Field Control/Voltage Regulation
  • Multiple open and closed loop strategies
  • Configurable voltage and temperature monitoring
  • Separate target voltages for afterstart, normal operation, over run, and WOT
  • Warning lamp output if voltage is above or below target
  • Comprehensive Test Modes
  • Test all outputs for proper functionality and verify wiring before starting the engine
  • Controls all fuel injector outputs, ignition outputs, idle valve, and general purpose outputs
  • Outputs can be tested for on & off or PWM pulse functionality
  • Injector and spark disable mode, allows checking for suspected problematic cylinder by electronically preventing combustion event
  • CAN Support for I/O expansion – virtually limitless I/O capability!
    • Up to 16 EGT inputs via CAN Expansion
      • Add fuel/engine shutdown capable
  • CAN Support for 3rd party dash devices
    • Currently offers support for RacePak, AIM, Race Technology, Traqmate, and Race Capture.
    • Pre-defined “simple” as well as fully configurable CAN broadcasting modes
    • Standard 11-bit message headers
    • Allows for simple integration with any 3rd party devices
  • Android Compatible
    • Use your Android phone or tablet as your dashboard or datalogger
    • Allows accelerometer and GPS data overlaid on your datalogs
      • Requires Android device and serial to bluetooth adapter, not included
  • Self Calibration
    • VEAnalyze Live feature is capable of automatically tuning fuel (VE) tables in real time
  • Fully Enabled
    • MS3-Pro comes fully loaded and fully enabled, there are no additional features to “unlock” or hidden up-charges to gain access to any functionality.
  • Compact, Efficient & Robust Design
    • Small form factor
    • Circuitry optimized for efficiency, low power usage, and no generation of heat
  • Redundant signal ground wiring
  • Dual external 5V ref supplies, individually fused
  • No Dark Current!
    • No power draw when system is off. MS3-Pro will not discharge your expensive race battery when your vehicle is in storage.
  • Field Upgradeable Firmware – enable newly added features with a simple firmware update!
    • Firmware is constantly under development and updates are easy to load via simple software interface.

EPA, CARB & Emissions Disclaimer- ECU's are for race purposes only.

Customer reviews

Rated 5 out of 5 stars
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7 reviews for MS3Pro EVO Standalone Engine Management System w/ Harness

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The latest MS3Pro Firmware & Software can always beaccessed at

Drivers for the USB connection can be found on the FTDI website

Download customer drawing

MS3Pro ECU Comparison 1st Gen – EVO – ULTIMATE

What is in the box?

  • MS3Pro EVO Standalone EFI Controller
  • 8′ “Flying Lead” wiring harness
  • USB and serial communications cables
  • Includes TunerStudio registration code
  • USB drive (for software/documentation)
  • MS3Pro ULTIMATE Pinout Glossy Card

How big is the ECU?

  • The MS3-Pro measures approximately 8.5″ long (including the mounting ears), 4-5/8″ wide, and 2.5″ tall including the mating connectors. Not including the connectors, the case itself is 1.5″ high.

Where is this product manufactured?

  • This product is manufactured in Gainesville, Georgia, USA.

What is the warranty on the MS3Pro ULTIMATE?

  • It carries a one year warranty against manufacturing defects.

How watertight is the box?

  • The case uses an o-ring seal and sealed connectors to ensure it is completely splashproof, and will keep water out if completely immersed up to a few inches for a few  minutes (which normally shouldn’t happen, right?).  If you need further water submersion resistance that can be accomplished with a small bead of silicone just inside/outside of the o-ring.

Questions & Answers

    Would this work with a 93 chevy 350 with either one of the auto trans of that year with 4x4. im looking to get rid of the tbi for power and fuel savings.
  1. 0 votes
    Q Would this work with a 93 chevy 350 with either one of the auto trans of that year with 4x4. im l...... Read more
    Asked by Hunter Hillebrand

    Yes, as long as you use high impedance injectors. If using a 4L60E or 4L80E transmission, you will need an add on MicroSquirt to control the transmission. All-hydraulic transmissions, or ones with just the lock up torque converter under electronic control, do not need the MicroSquirt.

  2. Does this include product troubleshooting/setup support like other standalone ecu brands or are you on your own like the older megasquirt versions? (I'm switching from an ms2 and will have questions about wiring differences and settings to my existing ignition.
  3. 0 votes
    Q Does this include product troubleshooting/setup support like other standalone ecu brands or are y...... Read more
    Asked by Anthony Valenti

    We support the MS3Pro lineup by phone and email. See our contact page for details. Older ECU designs, such as the MS3X and solder it yourself kits, are supported by email.

  4. I am considering using MS3Pro EVO for a 2004 Mercedes-Benz SLK32 AMG (3.2L V6 Supercharged engine), but I would like to also control the transmission. I noticed you mentioned using a secondary MicroSquirt for the '95 Mustang GT's transmission above -- Is this required for complete transmission control or is the MS3Pro EVO capable of running both the transmission and engine in parallel? I have tons more research to do obviously, I was just hoping you could point me in the right direction.
  5. 0 votes
    Q I am considering using MS3Pro EVO for a 2004 Mercedes-Benz SLK32 AMG (3.2L V6 Supercharged engine...... Read more
    Asked by Jeff G

    The MS3Pro EVO has only some very basic transmission capabilities - lock up torque converter and air shifted drag transmissions, mostly. Please contact us with details of the transmission you plan to use, and our tech team can go over your options for running this transmission.

  6. Would this work on my 88 and/or 95 mustang gt? Both built 302s and with all the standard sensors.
  7. 0 votes
    Q Would this work on my 88 and/or 95 mustang gt? Both built 302s and with all the standard sensors.
    Asked by Boston

    Yes, it can run either one in a wire-in configuration. If the '95 has an automatic, you can add a MicroSquirt to control the transmission.

  8. I want to boost my jeep 4.0l on my 87 xj and want to do sequential fuel injection and coil on plug ignition is the ms3 pro evo be with my factory sensors going to work I know I will have to change to a distributorless cam sensor from newer year jeep but wil it work with the ms3pro evo and do i have to change the flywheel crank tooth pattern or add a front crank sensor what are you recommendation
  9. 0 votes
    Q I want to boost my jeep 4.0l on my 87 xj and want to do sequential fuel injection and coil on plu...... Read more
    Asked by John Goehring

    Yes - whether this one has a Rennix ignition or you've swapped in a later 4.0 with Chrysler engine management, the MS3Pro EVO can run the factory cam and crank sensors. You can just substitute a blanking plate for the distributor cap. It supports the factory coolant and air temperature sensors, too. Let us know if you have any questions about this installation.

  10. Hi, I am looking for a stand alone unit to run a 1997 BMW v12 M73 engine in my replica, with a manual gearbox. I am looking for spark and timing control and fuel injection control, no turbos or boost control just simple driveabilty. I know I will have to convert to cable operated throttle bodies. Which Megasquirt would be the best and easiest to use? Thanks for your time
  11. 0 votes
    Q Hi, I am looking for a stand alone unit to run a 1997 BMW v12 M73 engine in my replica, with a ma...... Read more
    Asked by Casey B.

    The MS3Pro EVO is the one I'd recommend - you can run sequential fueling on this engine and six spark output channels for wasted spark ignition.

  12. I have a 1993 Porsche 968 that has no ECU/DME. Instead of replacing with OEM item I want to upgrade to a standalone tune-able ECU. Can your item be used as a plug and play ECU for the Porsche 968 engine. To complicate matters the 968 Engine and running gear is going to be put in a 1990 Porsche 944S2. I do have the engine loom for the 968. What sensors etc. will I require for this installation and is your unit suitable?
  13. 0 votes
    Q I have a 1993 Porsche 968 that has no ECU/DME. Instead of replacing with OEM item I want to upgra...... Read more
    Asked by Nigel Taylor

    You can use mostly factory sensors, although most installs remove the MAF and use the MS3Pro's built in MAP sensor. If the air temperature sensor is built into the MAF, you'll want to use a "freestanding" IAT sensor like the GM ones. And you'll want a wideband O2 sensor system like an LC2 to tune it with. One other thing that will help is our DIYBOB-B55K; this is a breakout adapter that will make it easier to connect to the stock harness.

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