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Take your racing performance to the next level with the SM3+ ECU standalone unit. Engineered for the most demanding race conditions, this advanced Engine Control Unit offers features like sequential ignition and fuel control, enabling lightning-fast acceleration and precise engine performance on the track. With onboard lambda sensor integration, real-time monitoring, and customizable tuning options, the SM3+ ECU standalone unit empowers racers to optimize air-fuel ratios and maximize engine power output with confidence. Elevate your racing experience and dominate the competition with the SM3+ ECU standalone unit.

Our SM3 is smart, it will automatic revert to master USB connection as soon as the USB cable is plugged in! Without USB connection it will switch to Bluetooth(if installed).

It's based around the MegaSquirt3 firmware but with refind electronics tuneable via the user friendly Tunerstudio software.


We believe and stand 200% behind our product, that we offer 2years factory return warranty!


General SM3+ V2 Elite

Enclosure

IP65 OEM-look Aluminium Casing

Temperature range

AECQ100 Automotive graded

Reverse battery protection

Yes, internal

Operating voltage

6-18V

Operating current (ECU)

< 0.5A or 2-4A with LSU4.9 sensor(s) connected

Weight (g)

850

Connectors

1x Automotive connector

Communication

USB or Wifi Onboard

Outputs SM3+

Injector outputs

8 protected outputs 3A, low side (Low&High Impedance supported)

Ignition outputs

8 outputs active coils 

Aux outputs

12 protected outputs 2A, low side

+5V

2 short circuit protected

CAN BUS

Yes onboard

Input SM3+

Inputs

19  13 Analog inputs 0-5V, 6 Digital inputs or additional inputs over CAN

EGT inputs

1 K-Type thermocouple controller Onboard

Knock sensor inputs

2 LSU4.9 controllers Onboard

Oxygen inputs

2  wideband 0-5V or narrowband

Trigger inputs

3 both inputs Hall ,VR or optical compatible

VSS

yes

Flex Fuel

yes

Sensors Inputs SM3+

Temperature sensors

IAT, CLT, Oil temperature,EGT, etc

Pressure sensors

MAP, Onboard realtime BARO, Oil pressure, Fuel pressure, AC pressure sensor,EBP,etc

Oxygen sensors

LSU 4.9 (2x Onboard controller) 

Speed

Vehicle speed sensor (VSS over GPS Data)

Fueling Outputs SM3+

Injectors

8 (Full-sequential) or 16 (batched fire)

Battery compensation

User defined

Fueling strategies

VE based speed density, Alpha-N, ITB

Air charge temp.

Based on IAT and CLT

VE table

4 tables 16×16 (Load x RPM), resolution of 0.1

Individual cylinder trim

Yes

Staged injection

Yes

Additional correction

EGT correction (per cylinder), BARO, TPS vs MAP, TPS vs RPM, Warmup, Nitrous, LC, ALS, ASE, Fuel pressure, Knock sensor

Lambda based real time correction

Lambda/AFR target table

Acc. / Deceleration enrichment

Yes

Ignition Outputs SM3+

Ignition outputs

8 active coils (Full-sequential) or 16 in wasted spark

Supported trigger Patterns

Multiple

Ignition angle table

4 tables 16×16 (Load x RPM), resolution of 0.1 Deg

Per cylinder trim

Yes

Dwell time battery compensation

User defined

Odd fire compatibility

Application dependent

Additional correction

CLT, IAT, TPS vs MAP, Nitrous, Idle, Knock sensor, LC, Pit limiter, ALS, Flat shift, Timers, Acc. enrichment

Knock Sensing Features SM3+

Channels

2

Resonant frequency range

1.22->19.98kHz

Sampling

Ignition event driven (per cylinder), knock window, user defined gain

Actions

Ignition retard and/or fuel enrichment (per cylinder), dashboard indication

Idle Control Output SM3+

Control type

PWM solenoids (2,3 wires)

Control strategy

Open / Close loop cranking and warm-up duty

VE correction

Yes

Corrections

AC clutch, coolant fan, analog input, ignition angle based

Boost Control Features SM3+

Boost ref and target tables

2 sets 8×8 (TPS vs RPM)

Control strategies

Open / Closed loop (PID based)

Corrections

Gear, VSS, IAT, EGT

Traction Control Features SM3+

TC strategy

VSS % slip,Perfect run(RPM), Switch input

Torque reduction

Spark retard or cut, Fuel cut, Boost cut

Sensitivity control

Software or switch input

Variable Valve Timing Features SM3+

Supported systems

VVTi, MiVec, VANOS, Double Vanos,VarioCam etc

Number of camshafts

4

Control strategy

PID based closed loop, CAM angle target tables 8×8

Flex Fueling Features SM3+

Ethanol content measurement

Yes

Fuel temperature measurement

Yes

Tables blending

VE, IGN, Lambda/AFR, Boost, Cranking fuel, ASE, Warmup

Fuel temperature PW correction

<
USB Driver
*ECU Beta custom ini file
SM3 Pinout Schematic
SM3+ ECU r1.5b User Manual(Obsoleted)
SM3+ ECU r1.5b Manuel d'utilisation (Obsoleted)
SM3+ V2 (ElitE) ECU r1 User Manual Kperformance

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SM3+ ECU v2

  • Product Code: SM3+ v2 ECU
  • Reward Points: 5
  • Availability: Out Of Stock

  • 694.99€

  • Ex Tax: 574.37€
  • Price in reward points: 665

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Tags: Megasquirt SM3+ ECU Module, Engine Control Unit, Performance Tuning, ECU Upgrade, Engine Management, Vehicle Performance, Motorsport Electronics, Race Engine Tuning, CANbus Integration, Data Logging, Real-time Monitoring, Tuning Software, Automotive Technology, Plug-and-Play Installation