Multiecuscan Elm327 Port Settings 2021 [updated] Jun 2026

Before opening Multiecuscan, you must configure the virtual COM port assigned to your ELM327 interface by Windows. Locate Your Interface Plug the ELM327 USB interface into your computer.

Look for "USB Serial Port" and note the COM number (e.g., COM3). Critical Windows Port Configuration multiecuscan elm327 port settings 2021

| Chipset | Drivers (2021) | Best Latency Setting | Common in | | :--- | :--- | :--- | :--- | | | Official FTDI v2.12.28 | 1 ms (Minimum) | High-end cables (Galleon, original ELM) | | CH340 / CH341 | CH340 v3.5 (Win10/Win11) | 2 ms - 4 ms | Budget "Blue" ELM327 adapters | | Prolific PL2303 | Legacy v3.8.21 (Not Win11 ready) | 16 ms (Stable) | Older cables (avoid for 2021) | Before opening Multiecuscan, you must configure the virtual