wiiyii obd2 Gauge Display Heads up Display for Cars Car HUD Head Up Display P6, OBD+GPS Smart Gauge, obd2 Speedometer with Speed,RMP,Water Temperature,Overspeed Alarm,Works Great for Most Cars

Stupid easy to install. I should have bought this years ago. It basically shows you all the data an obd2 reader will tell you with the additional of height above sea level, gps, mpg, brake test, 0-60, etc. It’s a great tach. It worked perfectly on my 2007 Toyota.

It helped me determine I have a faulty vehicle speed sensor / transducer in my Land Rover Discovery 1. The speedometer was showing normal but what was being reported to the ECU (accessed via the OBD2 reading) was way off and all over the place causing shuddering and loss of power. The problem was intermittent and viewing a code scanner would be very challenging to catch the problem. For about $40 tax included it’s well worth it for just this reason. But, it’s also really nice to have digital readings of coolant temperature and voltage. This era of Land Rover is notorious for the factory temperature gauge not moving until you are already overheating.

Bought this to get a tachometer functionality because some people on a forum recommended this to get a tach for a Rav4 prime. The issue with the Rav4 prime (and not so much with this HUD) is the battery voltage is super inconsistent. Sometimes it's over 14V, sometimes its at 12.8, 12.9V, and it can interfere w/ the voltage off, so unless if you're okay at working out some inconsistencies with this display, maybe don't get one for the Rav4 prime (I mean, the product description says it's not compatible w/ hybrids). The mounting tape wasn't very strong, and the suction cup was initially not "suction" at all until I took the proper time to get it suctioned on the window, and it has held itself in place ever since. There's an included screwdriver to remove the bottom plastic plate that you adhere the double sided tape to, I opted to removing that after getting the suction cup working properly, and used a piece of tape so the little remaining plastic bits have a soft place to sit on and doesn't damage the dash. 3 control buttons lets you to cycle between different display modes/entering into the settings/switching different readings on subsections of the HUD, and you're able to see readings like coolant temp, oil temp, transmission temp, turbo boost (if your car has a turbo), there's not too much customization, but there is a blanket reading page that just shows everything possible, if you need something like that. What is absolutely awful and not an excuse however, is the manual. There's like...no instructions on setting the manual, and it feels like half of the settings don't even do anything. There's also no way to disable certain warnings, like "high coolant temp warning", the only thing you can do is set it to an ungodly 200C. It also seems to shut itself off after the specified voltage after 3min regardless of what you set for the timer to turn this OBD2 off, at least that's what I assume what that setting is supposed to do, but there's no manual to tell me that. Given the price, this would absolutely be 5 stars had the manual actually detailed what all the settings did.

This device seems to work well. It ggives insight to various process and how well they are accomplished. The only thing I would think that would make it better is to increase the size of the instructions. The font size is so small that it's very difficult to read. Works great for my 1996 Geo Tracker.

This is a nifty little gadget. Various display mode allows me to pick the type and data I want to see. It fits snuggly on the corner of the dash board. I use it to display oil, water, CVT(*) temperature in real time. In the first try, the timed auto-off didn't work and it stayed on. It turns that I also need to set the auto-off voltage to >13V. Then it will turn off when the engine is off and after the set time. The logic is a bit odd but it worked. I bought one each for my 2018 Forester and 2020 BRZ. I do need to tweak the speed by 2~4% so the reading matches the digital speedometer on the BRZ and the Garmin navigation on the Forester. It reads "CVT" temperature on the Forester. But on the BRZ 6MT it also has a "CVT" temperature readout. I am assuming it is just the temperature of the transmission gear oil? I wonder if there's a way to rename it or somehow they just use CVT to represent all types of transmission.

This works really well once you calibrate it. Fuel economy needs proper engine displacement to calculate and there is a speed adjustment. Really happy with this purchase for my '99 that doesn't have a tach or engine temp gage.

"This product works fine overall, but some functions like RPM and other features aren’t working properly. Even the clock isn’t functional. While the speedometer works, the high price makes it not worth the money. I think avoiding this product is the best option."

色々多機能がありカッコ良い

I have been using this now for over 2 years in wife's Hyundai ix35 and now in Tucson. Wife primarily relies on this for speed and I found it very accurate with car speedometer. I used the window suction mount option as it is easy to install. There are so many display designs and other data from car's computer which one can find handy. Brightness is perfect. I use google maps or Waze for actual speed as all cars speedometer is always higher than actual speed. This is not this device fault.... most people don't know this. I will highly recommend this product

Y a un relais qui a sauter à quelques part derrière mon tableau de bord si bien que tout les cadrans et mon système de chauffage climatisé d'habitacle sont H.S.! 😭 Mais en installation c'est appareil formidable j'ai plein d'information que j'avais pas avant a part les RPM et la vitesse, j'ai maintenant le voltage de ma batterie avec l'alternateur voltage de charge,pression d'huile moteur, température, du liquide de refroidissement, consommation en litre au 100km ,un odomètre, aussi il s'éteint tout seul quand le moteur est coupé, aussi il lit et effacent les défauts sur l'obd2... nous avons aussi l'heure mais surtout j'ai enfin été capable de corriger ma vitesse qui était plus lente de 7% très facile à re calibrer avec les fonctions de configuration maintenant je roule à un véritable 100kmh en affichage et 100kmh en réalité avant sa indiquait 107kmh et ma vitesse réel était de 100kmh .🤩

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