GPS Speedometer, ACECAR Car Universal GPS Heads Up Display, Speedometer HUD with USB Interface, Speed, Driving Direction, OverSpeed Warning, Travel Distance, for All Vehicle

When i was first using it the displayed speed was 15 MPH over the actual speed I was traveling. I got in touch with the seller and they provided me with calibration instructions which corrected the error. They were quick to respond with very clear instructions.

So far so good. I had a smaller HUD display that was pretty slow and no GPS so all I had to do really was plug this one is. I did have to adjust the speed value some but I like having speed and water temp at the same time. The RPM gauge is a little goofy as the blue and the numbers dissappear as rpms increase, seems like you'd want it the other way as in blue and numbers show as RPMS increase and then dissappear as they decrease. Maybe there is an option for that, idk haven't gotten that deep with it yet but overall pretty happy with it. The display is nice.

I purchased the unit it be installed into a C5 corvette. I confirmed the car supported OBD2 diagnostics and this unit specified it would function on a car with OBD2. I wanted the functions provided by OBD2 and not the GPS functions. Once the unit was plugged into the OBD2 port it displayed limited data and I could not find any way in the settings to make it function.

Looks cool, but it's rough 5 mph off making it kinda useless being its not always 5 mph off.

Funciona Exelente le da un toque especial a tu auto lo recomiendo.

This provides a very acceptable HUD. I only use speed and time because I feel more data only clutters the windshield and defeats the purpose. The unit display shows really well at night but sometimes in bright sunlight it disappears but I also find this with some light conditions with my car speedometer (2016 Murano). I have not used the reflective sticker because I do not get ghosting on my windshield and don’t want to have it as a semipermanent feature.The instructions were not too clear or intuitive and I can understand some reviewers giving up. Better step by step instructions in clear English would help (or a Website with an English video). It took me 30 minutes to decipher enough to change to mph, after that it became easier.You have to press the M button until it beeps (2 seconds) then one short press to ascend the menu eg.if you want to change from Kph to Mph press 9 times or until 9 shows in the display. The menu line number is displayed on the unit in mirror image! Then use the arrow buttons to adjust to the required setting, then press M until it beeps. I hope this helps.The bottom line is with a bit of effort you can have an HUD in any car at a fraction (1/100th!) of the price of the bundle of unwanted items you are required to buy to have it in a new car.

It gets very annoying and you can see the speedometer on the outside. Very noticeable especially at night.

Worth every penny