This little dongle plugs into your car's OBD-II port, and talks to your Android phone (via an app like Torque) over Bluetooth to give you driving stats, check engine light codes, and more. There are a lot of similar devices out there, but this one has particularly good reviews. [BAFX Products BAFX3127 Bluetooth OBD2 Diagnostic Scan Tool, $19]
- PAPAGO GoSafe 520 Ultra WHD 2K Dashcam with 3-Inch LCD Display ($185) | Amazon
- Apps2car Bluetooth 4.0 Hands-free Car Kit ($20) | Amazon
- Slime 20017 Digital Tire Gauge 5-150 PSI with Lighted Tip ($9) | Amazon
- Craftsman Programmable Digital Tire Gauge ($13) | Sears
- Delk 52495 Frost Guard with Windshield Cover ($22) | Newegg
- BAFX Products BAFX3127 Bluetooth OBD2 Diagnostic Scan Tool ($19) | Newegg
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