If you recognize that plug, you know it’s an OBD interface for your car’s engine. What’s that black box, you ask? It’s Innovate Motorsports’ 3831 OT-2 OBD-II Wi-Fi Interface – which transmits engine diagnostics via Wifi to your iPhone/iPod Touch/iPad, displayed on the free LogWorks Mobile App (after the jump). You can even directly wire in other sensors, such as air/fuel ratio or temperature, and yes, you can use it to wirelessly reset those “check engine” warnings.

Screenshots of the LogWorks Mobile app for iOS: