Description
This Engine ECU Control Module, referenced under OEM number 7791190, was engineered by BMW for the E46 3 Series. Extracted from a written-off vehicle and passed through diagnostic testing, it offers a genuine, used alternative to costly new or remanufactured units.
Managing the engine in the E46 3 Series demands precise multi-point coordination: the ECM balances fuel injector timing, ignition dwell, variable valve timing signals, and idle actuator output simultaneously. It continuously cross-references coolant temperature, intake air temperature, and throttle position to maintain optimal power delivery and emissions compliance.
When this module begins to fail, symptoms often include rough or hunting idle, intermittent misfires, loss of power during acceleration, and difficulty holding a steady cruising speed. Fault codes related to fuel trim, sensor signals, or ignition circuits frequently accompany these driveability issues.
Offered as a used, tested component — always verify OEM number 7791190 against your vehicle’s build data before ordering. We recommend installation by an experienced technician, as coding or adaptation procedures may be required after the module is fitted. A 14-day return policy covers this item.
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/
