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The base model of the Vi-PEC range, the V44 is fully featured and very flexible.


This ECU has been replaced by the i44.

The Vi-PEC V44 is our budget model. Despite this, the V44 is very capable with control of up to four variable cams and support for engines up to twelve cylinders. Software has very flexible options over how the inputs and outputs are controlled, and allows the user to design their own functions to control all sorts of devices. Precise control of injectors and ignition angle are guaranteed at very low or high RPM or manifold pressures. A very high level of protection from interference and tolerance of trigger input errors has been built into this ECU, ensuring a smooth running engine even under the most demanding conditions.

  • Motor Sport features include: Antilag, Flatshift, Launch control and traction control in first gear.
  • Individual Cylinder Knock control, when external digital knock amplifier used.
  • Peak and hold injector drivers. Both the peak Amps and hold Amps can be set separately in the software for optimum injector control.
  • Closed loop control of idle speed and boost pressure makes for a "factory" idle speed stability, and precise control of boost pressure. Boost control can be setup to provide a different boost in each gear or switch between boost control tables.

Feature Comparison for V44, V88 and PlugIn ECUs.


  • Main Connector 34 Pin waterproof.
  • USB data link connector plus CAN
  • Case, silver extruded aluminum, 142 x 172 x 42 mm (overall). 
  • 40 MHz Specialized Automotive Microprocessor. 
  • Ignition control to 0.1 degree, fuel to 0.01 ms -
  • 32 Bit Calculation -
  • 10 Bit ADC Resolution
  • Max 20000 RPM 
  • ECU to PC data link operates at up to 57600 baud for fast data update an logging using PC logger 
  • High efficiency power supply & output drivers for reduced power consumption and reduced self-heating. 
  • Four ignition outputs. Sequential to 4 cylinders and wasted spark up to 8 cylinders. Support for engines up to 12 cylinders with distributors.
  • Software selectable dwell or O/P pulse duration modes possible. 
  • Four coil dwell, software selectable.
  • Four low current injector outputs. Optional Peak and Hold drivers available.
  • Spare injector and ignition outputs can be used for output control.
  • 8 Auxiliary Outputs 
  • 4 Digital Inputs
  • 4 Analog Voltage Inputs
  • 2 Temperature Inputs 
  • 3 Load Inputs (MAP, TPS, MAF)
  • 2 Trigger Inputs (Reluctor, Optical or Hall Sensors)

  • Camshaft & crankshaft sensor inputs individually software configurable for hall effect & reluctor sensor types. Response speed is also software configurable for improved noise immunity. 
  • Four general purpose digital Inputs with logic level sensitivity & pullup to +5volts. Useable for speed, switch input and camshaft position measurement.
  • Variable Camshaft control for up to four camshafts. VANOS and other VVT and VVT-i supported. 
  • NTC or PTC air temp sensors, software selectable. 
  • Internal 4 bar map sensor. External map sensor support.
  • Internal baro sensor. Corrections for barometric changes in real time.
  • Stepper motor idle control, two and three wire idle control. 
  • Support for air flow meters.
  • Tacho & Diagnostic outputs. 
  • Communication with PC software via USB cable. (No need for Serial to USB adapters)

Kit includes:
2 Meter Harness
Air and water temperature sensors.
USB Cable


  • Tuning tools, QuickTune Mixture Table, Maths Key. 
  • Launch Control (two step rev limiter based on vehicle speed). 
  • Flatshift (change gears without clutch at WOT using standard gearbox). 
  • Antilag (keep turbocharger on boost during gear changes) with turbo cooldown function. 
  • Selectable ignition tables.
  • Up to 440 Zone Fuel Table with configurable load and RPM centres. MGP, MAP and load options. 
  • 5D Fuel Mapping. 
  • Many correction tables for precision fuel & ignition adaption. 
  • Digital Trigger Decoding. 
  • Reluctor, Optical or Hall Sensors. 
  • Programmable filtering and arming thresholds. 
  • Configurable trigger patterns or preset triggering options, such as, Multi tooth, missing tooth, Subaru, Nissan, Mitsubishi, Ford, Mazda, GM, Suzuki and Toyota triggers. Software selectable trigger angle. 
  • Support for up to four rotor engines with ignition split. 
  • Dedicated idle control with additional settings for better adaption to changing operating condition and a more stable idle. 
  • Open loop boost control, switch boost pressures, different boost in each gear. 
  • A/C compressor control.
  • Closed loop narrow band.
  • Closed loop wideband at WOT.
  • Tacho and speedo sweep function.
  • Cooling fan control. 
  • General purpose control modules for O/P control. (use for variable fuel pump, power steering, inlet manifold air valves, extra temperature control devices etc) some of these are capable of PID feedback control.
  • Mapping via manifold pressure, throttle position, manifold and throttle or manifold.

Case Dimensions:

  • L = 142mm (5-5/8")
  • W = 127mm (5")
  • H = 42mm (1-5/8")
  • Weight = 0.6kg (1.3 lbs)

For documentation and help file go to this page.


   40 MHz Specialised Automotive
Supply Voltage
Normal operation
Safe limits
   6.2V to 23V DC continuous
   +/- 24V (5 min)
   +/- 80V alternator load dump (0.5 sec).
   +/- 1000V inductive spike (10 usec)
Current Drain
@ Engine idle
@ Max Engine Load
   < 1 Amp.
   < 16 Amp (less depending on injector type and number.
Operating Temperature Range
   - 40 deg C.
   + 85 deg C.
Engine Cylinder Number Settings
Number of cylinders
   1, 2, 3, 4, 6, 8, 10 and 12
Engine RPM Range
0 to 20,000 RPM
   Engines up to 12 cylinders
Injection Duration Timing
   0.65 msec.
   50 msec.
   +/- < (10 usec + 1%)
   0.1% approx.
Injection Timing
   0 to 720 deg (crank angle).
   +/- < (1.4 deg + 0.3 msec).
   2.8 deg.
Ignition Timing
Advance range
   0 to 45 deg (crank angle).
   +/- 0.2 deg (crank angle).
   0.5 deg (crank angle).
Fuel Delivery and Ignition Mapping
No. Load sites
No. RPM sites
   16 (max).        Both Load and RPM sites
   32 (max).        are freely selectable.
Data Logging Memory
L * W * H
   142 * 127 * 42mm
Weight  .    0.5 kg
   34 way 'AMP' water and dust proof socket.
   USB Socket 
   CAN bus socket for dash display

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