Trying to get VEMS to run in a plug and play fashion on a 1997 Seat Cordoba SX, with a 2.0-16V engine (engine code ABF). The sensors, actuators and required outputs are:
- Hall-effect type crank sensor on a 60-2 trigger wheel
- Hall-effect sensor on camshaft for sync
- Bosch coolant and air intake NTC temperature sensors
- Single dumb bosch coil triggered with external module, and with ECU controlled dwell (but swapping to waste-spark now so need 2 high current ignition drivers)
- Two bosch 3-wire knock sensors
- RPM signal from ECU to instrument cluster to drive tachometer
- 2-wire 4-ohm Bosch idle control valve
- currently 440cc highZ injectors, but hopefully the VEMS will be able to idle the new lowZ 720cc injectors without problems
- eventually the engine will experience up to 2 bar boost so 250kpa transducer inadequate
Extra I/O required:
- high current PWM driver for aquamist water injection high speed valve
- shiftlight
- IAT based output to drive intercooler spray solenoid
- Boost control using cosworth or Saab solenoid
- one EGT using k-type TC in exhaust manifold
- noritake VFD 4x20 LCD-pin-compatible display
- one wideband bosch LSU4 sensor
Table of VW pinouts corresponding to VEMS pinouts:
| Description | ABF ECU | VEMS |
| Main grounds | T68/1 | EC36-5,21,32,22 |
| Sensor grounds | T68/33 | EC36-26 |
| Air temp sensor | T68/36 | EC36-? |
| Coolant sensor | T68/14 | EC36-14 |
| TPS signal | T68/40 | EC36-40 |
| Crank sensor power | T68/38 | EC36-? |
| Crank sensor signal | T68/?? | EC36-?? |
| Switched 12v power | T68/38 | EC36-25 |
| TPS reference voltage | T68/41 | EC36-28 |
| Ignition coil output | T68/8 | EC36-35 |
| Idle control valve | T68/27 | EC36-?? |
| Injector 1 | T68/24 | EC36-7 |
| Injector 2 | T68/25 | EC36-19 |
| Injector 3 | T68/26 | EC36-8 |
| Injector 4 | T68/2 | EC36-20 |
| Injector common | ? | EC36-23 |
| Fuel pump relay | T68/6 | EC36-15 |
| Tachometer signal to cluster | T68/22 | EC36-? |
| Knock sensor 1 signal | T68/34 | EC18-3 |
| Knock sensor 1 ground | T68/32,10 | EC18-2 |
| Knock sensor 2 signal | T68/57 | EC18-3 |
| Knock sensor 2 ground | T68/55,56 | EC18-2 |
| Charcoal canister | T68/31 | EC36-? (boost) |
Current engine hardware:
- 60 trim T3 garrett with 0.63 AR turbine
- stacked headgaskets
- 440cc injectors
- 1.2bar boost
- water injection with aquamist HSV solenoid