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.
The primary aim of the S40 is to provide an economic ECU for relatively simple wasted spark four cylinder engines using semi-sequential injection.
Advanced features and system flexibility, however, are in no way sacrificed to this aim.
ECU Functions
Engine Configuration
20,000 rpm capability
Flexible and easily adapted to different OEM, crank, cam sensor arrangements.
Genuine four and two stroke support.
Twin injector engines.
Semi - sequential injection.
wasted spark or distributor.
User controlled fan activation.
Sensors can be calibrated individually with a lot of preset options supplied.
Flexible Tacho Output
soft and hard rev limits
Main Fuel and Ignition Functions
Comprehensive start up fuelling options both time and temperature dependant.
Air, coolant and manifold pressure compensation maps.
Throttle transient increase compensation.
Throttle transient reduction compensation.
RPM and load breakpoints can be calibrated by the user.
Throttle or MAP as load.
All maps with one or two dimensional with interpolation as required.
Lambda control functions
Extensive lambda parameters table to ensure stable closed loop operation and emissions requirements can be met where needed.
Full three dimensional lambda target map.
Auto-tuning function.
Turbo Control Functions
Open or closed loop turbo pressure control via PWM valve.
Modify target turbo pressure by gear selected.
Modify target turbo pressure by vehicle speed.
Active base PWM map for easy calibration.
Idle Control Functions
Open or closed loop idle speed control via PWM valve.
Closed loop idle target speed temperature dependant.
Active base PWM map for easy calibration.
Fuel enrichment table calibrated versus PWM percentage.
Flexible Input/Output
Three uncommitted input tables which use 0 5 volt inputs or any input the ECU knows already, linked to fuel and advance modifiers and a PWM output.
Launch Control
Fully flexible first gear launch capability.
Extensively tunable to individual vehicles.
Full Throttle Gear Shift Cut
Shift cut capability with 1ms resolution, variable for each gear with
full switch de-bounce capability.
Voltage Compensation Tables
User configurable voltage compensation tables for injector dead time
and coil on time (dwell time).
Diagnostics and Test Features.
Full sensor diagnostics and fault recording.
Extensive engine run time recording at different load and speed conditions.
Ability to exercise injectors and coils without engine running for fault finding.
Other Features
Sealed Latching Connectors
Size 115 x 100 x 41 mm
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
Inputs
Crank Shaft (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
Outputs
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
This kit comes with a ready pinned splice in wiring loom. You will need a programming cable if you do not already have one.
