35 lines
1.2 KiB
Markdown
35 lines
1.2 KiB
Markdown
# Vault of BMW Info
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This is a repository of a bunch of info relevant to fitting rusEFI to the older (Pre E46/Pre CANBUS) BMWs.
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## Early Motronic Ti Signal (Fuel Consumption)
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https://www.msextra.com/forums/viewtopic.php?f=131&t=59516&start=20
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https://www.msextra.com/forums/viewtopic.php?f=131&t=53920
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Load Signal (Ti):
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is produced by the ECM as an output function that represents the actual amount of fuel injected.
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It is made available to other control modules as an input for operation.
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These control modules include:
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* OBC=Fuel consumption for MPG and Range.
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* Instrument Cluster = MPG Gauge
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* EGS = Load signal for shift points (If Equipped)
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The Ti output is a processed square wave signal.
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The frequency of the signal is proportional to engine RPM.
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The pulse width and duty cycle will vary to reflect the injection quantity
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It looks like it is a 12v signal as some have managed to get it working with it wired to inj1 running sequential mode on an MS.
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12:53
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Which also implies it is a 12v lowside to run it
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you could actually run it with general purpose pwm pretty easily
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## 88 pin Motronic pinouts
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https://docs.google.com/spreadsheets/d/1OiEaak7TElKwF-fXWvl9Dk-fD84a0NENe6lOwhXiOe4/edit?usp=sharing
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