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BY-J Heads Up Display with OBD2 GPS Dual System, P8 Car HUD Display OBD2 Gauge Display Speed Clock RPM can Installed Dashboard and A-Pillar Trim, Car Speedometer for Car for All Vehicle
$31.59
Guaranteed Safe Checkout
Features & Compatibility
Price: $31.59
(as of Mar 30, 2026 13:54:14 UTC – Details)
Product description
Multiple method test data
Acceleration test
The time from 0 km/h to 100 km/h.
Turbo pressure
Please note:If the car donnot have turbo,then there is no date.
Brake test
The time takes when step the brake until car stop.
Multiple interface display
Small size multi-display
Real usage scenarios
[Applicable models] This machine is equipped with 2 lines: OBD2 and USB line. The OBD2 mode is only applicable to most vehicles produced in the United States in 2004 and in other regions after 2008 (if you want to use the OBD2 mode, please check whether your vehicle has an OBD2 agreement or contact us for confirmation before buying). GPS mode is suitable for all vehicles. (If your car is not compatible with OBD, use GPS mode.) Dual system, free change.
[OBD2 function] OBD2 mode: vehicle speed, rotation speed, water temperature, voltage, fuel consumption, clock, single travel distance, single travel time, oil temperature, turbine pressure, acceleration test, brake test, overspeed alarm, engine failure alarm, fault code Exclusion, water temperature alarm, speed alarm, voltage alarm, mileage switch, fatigue driving reminder, automatic and manual brightness adjustment.
[GPS function] GPS mode: vehicle speed, voltage, satellite time, altitude, number of satellites, driving direction, single mileage, driving time, acceleration test, brake test, overspeed alarm, low voltage alarm.
[2 types of installation functions] Install on the A-pillar trim or on the dashboard, which is more convenient to use. It only needs to be displayed directly to you at any angle you set, without any effort or distraction by bowing your head. It is the best assistant to help ensure your driving safety.
[Brightness adjustment] Automatic and manual brightness adjustment modes, driving without glare; the vehicle starts and stops automatically on and off, which effectively protects the car battery; while retaining the manual switching mode, it is more conducive to controlling the HUD.
D.D. –
Wow amazing it works
Wow, bright clear readable. And only 1 mile off at 85 miles per hour anything under was perfect highly recommend.
Timothy –
Works great
Ordered multiple times for my trucks
Kentucky Tim –
First Indicators Engine Problems are Charging Voltage & Oil Temp
Super-easy way to add a new gauge (oil temp, turbo boost, volts, etc.) to your dash.Just remember to detach from the vehicle when it is not driven day-to-day.Along with the mounting kit, the vendor should supply a non-permanent adhesive gel or tape kit for securing the cable.
Buyer of Stuff [Public Safety & Tech Gadget Enthusiast] –
A nifty little add-on to spruce up your ride.
For the price (about $10 at time of ordering), this thing is pretty cool. It’s surprisingly bright at its maximum illumination setting and the speed readings are accurate enough to rely upon. In fact, I’ve taken to using it as my primary speed gauge and, where my speed would normally be displayed in my instrument cluster, I’ve swapped it to show other car stats instead.Setup is very easy and straightforward; plug the thing in and follow the instructions, which are written in kinda gimpy but serviceable English. My only gripes are the build and design; the unit is made of a fairly cheap feeling plastic, and the design has everything on the “wrong” side; the USB port and main control switch faces away from you, so unless you plan to hardwire this thing with your own materials, this will be a source of annoyance.The package came with adhesive strips, which I completely ignored in favor of peel-and-stick velcro. Trust me, that’s the way to go with this thing; if you mount it too close to the windshield (permanently), you’ll find yourself unable to make any adjustments to the device once it’s installed. Use velcro so you can easily plug it in and change the settings.
desaire –
Works on OBD2 as it should.
Great product I’m so glad I was able to get this for my car due to my stupid not having a temp gauge, apparently, they expect you to be psychic and know what the temp is for the car (2005 scion xb)but definitely works how it should show’s me many read outs, far more than what I was expecting. I only cared about the Coolant temp and oil temp and they both display on the same screen, it also shows you live data which is very interesting for a product that was under 40, my old scan tool doesn’t even do that. You won’t regret buying this item. To reiterate I’m using it in OBD2 mode, not sure how it works in the other mode but for me it works and that’s all I care about. Also comes with a pretty long cable to mount it wherever on the dash you would like.
Amar –
It’s too small. Pics are blatantly misleading.
I havnt gotten scammed like this in awhile. Way smaller that the pics. Now they’ll create an alt account anyways once the review score drops.
Sam –
Not accurate
Not accurate at all I find it to be up to 5 miles off at the speed of 68
Lixa –
Easy to read, easy to install, easy to use!
To start, I’m short. I keep my seat as high as it will go, but I’m still short. Because of that, my view of this HUD is a bit obscured. I’m ok with that, what I want to see is visible, and if I straighten up a bit higher, I can see the rest.If you’re taller than me (and honestly, most people are), this should not be much of an issue for ya.The display is clear and crisp, and very easy to read. The base has a sticky bit that keeps the display attached to the dash and it doesn’t budge. Because that and the power cable are the only required items, installation is a breeze.I’ve found that the speed is pretty spot-on; I’ve seen a few times where the MPH displayed in one off from my dash but it catches up pretty quickly.It comes with a power cord that is USB-C on one end to plug into the device, and a regular USB to plug into the car. I had to use an adaptor since my car is USB-C also, but that hasn’t caused any issues in the time that I’ve used it.For $20, this is a great little tool; it’s accurate, works well, and doesn’t block the view of the road. Absolutely a great value for the price!