The stock engine is a inline 6 cyl engine called M20B23, manufactured in 1979. It used distributor controlled vacuum/advance ignition and K-jetronic fuel injection. On this car, all the K-jetronic junk was burnt at the stakes and a Motronic intake, fuel rail, fuel injectors and trigger wheel+sensor was mounted.

* Trigger : Stock 60-2 wheel with sensor and wiring from 1988 Motronic BMW 520 (M20B20)

* Coolant temp sensor from Motronic engine

* Intake air temp sensor from web shop (MAT sensor, 14x1.5 mm thread, open air design)

* TPS from Farnell (small form factor, had to use adapter plate)

Interesting fact is that we started up the engine with basically the same config as MembersPage/MattiasSandgren/StefansBMWTurbo and the ignition timing was only off by a couple of degrees initially. Only req_fuel changes were made and it ran close to perfect with a little less vacuum due to what must be a slightly hotter cam than stock.

Genboard information

Board_version=v3.3 $FlgChr1$FlgChr> Serial_nr= 806 (8 IGBT, VR, HALL) $FlgChr2$FlgChr> pump-= 4.15V $FlgChr3$FlgChr> wbo2_pump_pw_zero=0x67 $FlgChr4$FlgChr> wbo2_nernstdc_target=0x86 $FlgChr5$FlgChr> pump+= +1.5mV/200 Ohm $FlgChr6$FlgChr> AREF=4.9V $FlgChr7$FlgChr> (C103=1nF, no D100)