The e1280s is our top-of-the-line product. Its patented completely configurable tuning system allows the tuner to implement ANY control function that can be articulated, using a system of basic elements like maps/tables, PID controllers, timers and basic arithermetic and logical functions.
The tuning software has been designed to make most of this functionality transparent to less advanced users, so the ECU can be installed by novices and experienced tuners alike.
ECU Features
"3D" Fuel and Ignition maps (as on any sophisticated aftermarket ECU)
Full 360 or 720 degree ignition or injection control (end of injection timing), unique to each output
16 Analogue inputs (defaults are MAP, TPS, coolant temp, air temp, oxygen sensor, and spares)
12 injector outputs - allows full sequential injection up to 12-cylinders, staged injection fully sequential up to 6 cylinders or full sequential primary and semi sequential secondary up to 8 cylinders. Spare injector outputs can be used as aux outputs.
8 ignition outputs - allows coil-on-plug up to 8 cylinders, or 12 cylinders with external ignition multiplexing.
8 configurable push/pull aux outputs, all PWM capable at arbitrary speeds
8 configurable auxiliary digital inputs, with programmable pull high/low
USB PC interface
Field upgradeable firmware
Datalogging via 'SEKUKU' PC software, or to internal memory, or to a USB stick for virtually unlimited logging!
Special Features
Adaptive Closed-Loop Fuel Control - with configurable tolerances and loop gains, and conditions under which adaptive behaviour takes place (requires a wideband oxygen sensor to be fitted)
Narrow-band (factory EGO sensor) closed loop fuel control
High current programmable outputs - allows direct drive of solenoid valves for boost control, air bypass etc
Special function programmable outputs - allows control of anti-pollution purge valves, air conditioners, fuel pumps, drive-by-wire, etc
Adaptive Closed-Loop Idle Control - allows configuration of increased idle bypass amount based on low battery, electrical load, air conditioner, as well as correction based on RPM, and optional closed-loop ignition timing adjustments for idle speed regulation
5 crank/cam angle sensor inputs (for continuously Variable Valve Timing on up to 4 channels)
Open-Loop and Closed-Loop Boost Control
4 wheel speed sensors, digital or reluctor (Traction Control and Launch Control)
Many other features
Technical Specifications
| Attribute |
e1280s |
| Physical |
| Connectors |
1 76 pin vehicle connector
1 USB B connector (laptop connection)
1 USB A connector (USB stick for datalogging)
1 3.5mm headphone output (for listening to knock)
1 4-pin Minidin
2 DE9 connectors for serial communications (for slave devices eg wideband oxygen sensor controllers) |
| Physical Dimensions (mm) |
190 x 150 x 44 |
| Mass |
0.7 kg |
| Looms available |
0.5m long (for connection to existing loom)
2.0m long (for wiring directly to engine) |
| Sensor Interfaces |
| Crank angle sensor type |
5 programmable inputs, missing tooth detection, multitooth and various others supported
Reluctor and optical/Hall effect inputs, with configurable edge selection, internal pull-ups when in optical/Hall effect mode |
| Manifold absolute pressure input |
0 - 5V, arbiratary calibration, 1/3 bar calibration supplied (requires external sensor, 5V supplied by ECU) |
| Air and water temp inputs |
4k7 pull-up (requires separate thermistor connected to ground), multipoint linearly interpolated calibration |
| O2 input |
2 x 0 - 1V factory narrowband, or Bosch "wideband" - input impedance 1 MOhm.
Can connect 0-5V linearised sensor (eg PLX, M&W UEGO) to aux input
Can connect 0-3V Zietronix sensor to analogue input
Can connect M&W UEGO, TechEdge, Innovative to second serial port |
| Knock input |
2 x High impedance input, bandpass filtered, with headphone output |
| Throttle position input |
0-5V (5V supplied by ECU), 2-point calibration, adaptive learning |
| Auxiliary digital inputs |
8 inputs, each configurable as active-high or active-low, pull-up or pull-down resistors, 12V tolerant inputs |
| Actuator Interfaces |
| Number of injector drivers |
12 |
| Injector driver waveforms |
Any end of injection angle (within 720 degree cycle), independent for each output
360 or 720 degree firing
Additional asynchronous burst (not synchronised with engine timing) |
| Injector driver current |
Optional constant current or peak-hold drive, selectable steady-state current of 0.5A, 0.9A, 1.5A or 1.9A. Switchmode drivers |
| Number ignition outputs |
8 |
| Ignition output waveforms |
Any ignition angle (within 720 degree cycle), independent for each output
360 or 720 degree firing |
| Ignition output type |
Open-collector with 470Ohm pull-up, plus series 100 Ohm resistance (allows direct connection to OEM transistor or separate igniter) |
| Number of auxiliary outputs |
8, with push-pull & PWM on all channels. 4A sink, 1A source |
| Control Characteristics |
| Map points |
Limited only by memory - additional points can be added at any RPM or load |
| Load determination |
VE based on TPS or MAP, with MAP correction |
| Injector pulse width resolution |
2µs (0 - 60ms) |
| Ignition resolution |
0.02° (-360 - +360°) |
| Dwell time resolution |
20 µs (0 - 600ms) |
| Accelerator pump |
Based on predicted MAP value |
| Fuel control strategies |
Open loop, closed loop, adaptive modes |
| Fuel correction |
Open loop, load based engine temperature, air temperature, cranking & post-crank enrich |
| Ignition control strategies |
Open loop, closed loop, with temperature correction table for air temp and coolant temp |
| Idle control strategies |
Open loop value vs coolant temperature
Target speed vs coolant temperature
Extra for electrical loads and aircon
Post crank idle-up
Dashpot |
| Calculation speed |
Approximately 300Hz |
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