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325 Series & 525i

A/C Compressor Control, Acceleration Enrichment, Cold Start Control, Deceleration Fuel Cut, Fuel Injection Control, Fuel Tank Vent (Evaporation) Control, Idle Speed Control, Ignition Timing Control, Ignition Timing/Fuel Injection Intervention Via DWA and On-Board Computer, Oxygen (Sensor) Control, Relay Controls and Self-Diagnostics.