The car
The project car is a BMW E30 325i with a 3.0 litre stroker engine with turbo. The stock Motronic system is not good enough for this engine, and it has been decided to install a Genboard.
Many details will be the same as for the installation of MembersPage/GergelyLezsak.
Engine details
Some of these things are still not decided upon:
- Engine: M20B25 , 6 cyl inline, 12 Valves, SOHC.
- Primary trigger: Stock 60-2 VR crank-trigger.
- Ignition system: Single coil, mechanical distributor.
- Idle control : Stock solenoid, two coils - only one used.
- Fuel injectors: Yet to be determined.
- TPS: Yet to be determined.
- IAT: Yet to be determined.
- CLT: Stock coolant sensor has NTC curve 2.5kOhm@20C.
Issues
- TPS needs to be converted to potentiometer-style for best result. Resistor network cold be hacked together to get three unique positions or a modern TPS could be mounted.
- There is no stock IAT with the AFM gone. It could be custom made with a NTC thermistor (found in Webshop) or maybe a commercial GM/Delco IAT sensor ($16 at Summit Racing).
- Fuel injection needs to be sorted out, this depends on keeping the stock harness or building new one which wires to separate injector drivers for each injector.
Genboard wishes and details
Ordered an assembled unit and should be configured like:
- Primary trigger : VR sensor / 60-2 wheel
- Secondary trigger: Currently no cam sync, but prepare the board for Hall.
- Low voltage flyback.
- One channel EGT mounted.