@topdonusaofficial: No extra vacuum ports? No problem. Here’s how to capture an intake pulse waveform using the PCV vacuum source and the TOPDON Phoenix Scope. ✔️ Sensor setup ✔️ Scope settings ✔️ Healthy waveform example #TOPDON #PhoenixScope #Mechanic #AutomotiveDiagnostics #Oscilloscope #EngineDiagnostics #TechTip