ECU Products.

DTA S40 PRO (DTA-400)

The S40 Pro is an economic ECU designed by DTA for relatively simple wasted spark four cylinder engines using semi-sequential injection.  Maintaining the highest manufacturing quality and reliability of more sophisticated ECU''s in the S series range, it provides a lower priced solution for a wide range of applications. 

Essential features are not sacrificed to this aim and still maintained are important auxiliary functions to allow this unit to be used on road vehicles where required.

S40 Functions:

  • Lambda control functions
  • Turbo control functions
  • Idle control functions
  • Launch control
  • Full throttle shift cut
  • Flexible input output
  • CAN networking
  • Sensor flexibility and crankshaft oscilloscope
  • Voltage compensation tables
  • Diagnostics and test features

Other Features:

  • Sealed latching connectors
  • Size 115 x 100 x 41mm
  • Weight 268 gm
  • All outputs protected against over temperature and over current.
  • Inputs protected against severe wiring mistakes and accidents
  • Reverse battery protection
  • Alternator load dump protection

Input and output features:


  • Crankshaft (magnetic only)
  • Throttle position
  • Coolant temperature
  • Air temperature
  • Manifold/Barometric Pressure
  • Lambda
  • Oil Pressure
  • Fuel Pressure
  • Oil Temperature
  • Battery Volts
  • 3 x User Defined Analogue (shared use)
  • Launch switch
  • Shift cut
  • Undriven wheel speed


  • 2 x coil drivers
  • 2 x injector drivers
  • Tacho
  • Fuel pump relay
  • Fan/Aux 2/Turbo pressure valve (shared use)
  • Idle valve (shared second injector driver)
  • Shift light

Also available in Ignition Only version - see DTA-401

See ECU Comparison Chart for Current Limits


DTA Comparison (170kb)

£495.00 exc VAT
(£594.00 inc VAT)