Single-Ended vs Differential ADC in Automotive ECUs: Why Your MAP Sensor Reading Is Lying to You
I remember the exact bench setup. It was a humid Tuesday in July, and we had a customer’s ECU on the harness simulator. The firmware team was chasing a ghost—a manifold absolute pressure reading that wandered by twelve kilopascals at idle. Twelve kPa. On a naturally aspirated engine, that’s the difference between a smooth idle and a stumble that […]