MembersPage/AndreasThulin (2006-03-20 02:58:52)

Planning VEMS 3.3 for turbocharging BMW M50B25 engine in an BMW E36. Lives in Sweden Gothenburg.

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M50b25

Enigne Spec:

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Ignition trouble

The problem was observed today when I was checking the timing.

I had only strobed the timing on the starter before, but today i strobed it on idle. Firmware: 1.0.36 and also 1.0.23 was tried with the same result. I'm using dualout and highboost. The actually timing is totally of the timing value set in MT.

Result with trigger tooth=4 and TDC after trigger=61

Result with trigger tooth=5 and TDC after trigger=64

This test was on idle @1000rpm +-/40, @45KPa. The timing fluctate +-1 degree. Would appreciate if someone could help me with this weird problem.

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Pin out:

Function EconoSeal pin
Sensor power 5V 36-28
Sensor ground 36-26
Power ground 36-5
Power ground 36-21
Power ground 36-22
Power ground 36-32
Flyback 36-23
injector 1 36-7 (Injector A)
injector 2 36-19 (Injector B)
injector 3 36-8 (Injector C)
injector 4 36-20 (Injector D)
injector 5 36-9 (Injector E)
injector 6 36-18 (Injector F)
CLT 36-14 (CLT Coolant Temp)
IAT 36-2 (Intake Air Temp)
TPS 36-1 (TPS signal)
TPS 5v 36-28 (TPS +5v)
IAC ?
Crank position sensor (vr) 36-27
Cam position sensor (vr) 18-13
knock signal A EC18-2
knock signal B EC18-3
coil1 36-35 (Coil #1)
coil2 36-33 (Coil #2)
coil3 36-34 (Coil #3)
coil4 36-11 (Coil #4)
coil5 36-24 (Coil #5)
coil6 36-10 (Coil #6)
Fuel Pump Relay 36-15
nernst_cell 18-13
heater - 18-18
pump - 18-7
pump + 18-9