my car is misfiring
The DME is a possible failure for the misfire for your 2002 BMW M3. A complete pinpoint test for the codes would need to be done to rule out anything like coils (https://www.yourmechanic.com/services/ignition-coil-replacement) or plugs (https://www.yourmechanic.com/services/spark-plugs-replacement). Your shop replaced the...