Amazon.com: Obdeleven Pro Edition Next Generation Professional OBD2 Bluetooth Diagnostic Scan Tool for Android and iOS: Automotive
From reading the forums it looks like some people struggle with the 'credits' and upgrade to the Pro version. I'm also trying to keep the air recirculation button in the closed position (no outside air comes in) at all times. Currently, it defaults to open when the car restarts. Is this change possible?