Description
Part number 8A0907311M is an OEM engine control module for the Audi 80 B4 generation — a premium compact from the <a href="https://giantparts.eu/brand/volkswagen“>Volkswagen group platform, respected for its refinement and engineering quality. Removed from a running vehicle and tested, this genuine used unit provides OEM-standard engine management for the Audi 80 B4.
The ECM manages petrol engine control functions across the Audi 80 B4’s powertrain — governing fuel injection timing and quantity, ignition advance curves, idle speed control, cold-start enrichment, lambda sensor feedback, and knock control within the period VAG Digifant or Motronic engine management system.
A defective ECU on the Audi 80 B4 typically causes engine misfires, rough idle, hesitation or stumbling under acceleration, failure to start, and fault codes relating to injection timing, lambda circuit faults, or ignition signal anomalies.
Supplied as a tested, OEM-matched used unit for the Audi 80 B4 from the Volkswagen group. Professional installation is recommended; VAG diagnostic coding and immobiliser adaptation may be required.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
