Review on 🚗 ACECAR Universal Car HUD Head Up Display - Digital OBD2 Speedometer | Speed MPH, Tachometer, Troubleshooting & Improvement Warning Function | HD Display | Compatible with Most Vehicles After 2008 by Matthew Sytniak

I love the variety of screens/views this unit offers including an inclinometer to help me determine road grade when towing my cargo trailer. It does not contain the readings of all sensors, such as B. the transmission temperature, but I do not deduct a star for that. I'm downgrading the star because this block tends to freeze and stop showing updates like in the picture. You'll see that it continues to read 24 mph and 1135 rpm even though I actually parked and put the sun visor on (the engine was still running). Not all readings are no longer updated. The only way I could get it to respond was to power cycle the device to "reboot" it. I haven't figured out if this device is measuring the voltage it's receiving or reading the sensor from the ECU, but I suspect it's measuring the voltage, which is usually lower due to the voltage drop on the low gauge wire connected to the OBDII is port. In the settings there is an option to adjust the voltage readings to show for example 99% or 101% of the measured voltage, which I used to bring the readings closer to the actual values. Due to the many options, please play around with the features and screens while parking safely as this can be very distracting while driving. Enjoy!