30-0311 X-Series OBDII Gauge

Awesome gauge to have. Easy to hook up. Easy to setup what setting u want. Super simple & clean looking. Will buy more.

I bought this because I wanted to monitor AFR on my 04 Rx8. The info online was scarce. Seems most people install their own aftermarket sensors or dont even attempt to read AFR unless their car is boosted. AFR can easily detect a giant vacuum leak. Lean condition is terrible on the engine and this gauge gives me extra piece of mind that a loose rubber hose is not gonna kill my engine. The gauge itself is rather finncky. Its the only one on the market like it so you cant do much about it. It has a light sensor to dim the display; I could easily tap into the headlight circuit if they supplied a wire for that. Also it really does need constant power. The manual states they use some rules to determine whether to display the gauge or go into sleep mode. This means that if you try to add a switched power source, you lose the memory feature of being able to see the last PID when you turn your car on and off. It really doesn't like being unplugged and seems to forget certain PID's until some unknown car on and off cycling allows it to relearn. Overall good gauge but wish there were better options out there.

If I could give it 4 and a half I would because the auto turn off feature does not work but it doesnt noticeably drain the battery even after a week of not using the car, I bought it for a temp guage for my 2012 jetta tdi and it works flawlessly for that and has a bunch more options that you can cycle through as well overall a real good option for what it does and ease of installation

Easy to use. Best for 2014+ cars due to more data avaliable. Instructions not included. Cord isn't very long but can be extended. Only reads OEM PID's which means its limited by your car manufacturer. Most cars it will read coolant temps, intake, battery volts, codes, RPM etc. Also wideband AFR, oil pressure, fuel pressure if your car stores that info. Only reads 1 thing at a time so its not a multi display. Gotta go to the vendor website for the instructions and code meanings...

Unit arrived very well packaged and all hit when installed it would power cycle on and off, sometimes it would allow me to go through the setting but then it powered down again all on its own even when the vehicle was on.

It’s a good gauge it just didn’t work with my 2002 Silverado 2500hd, but I tried it on my dad’s 2021 Nissan Titan and it worked just fine and looked awesome, all setting working etc. Definitely bummed out but oh well Ill find another option, just wanted something to verify my gauge cluster was working right with my new cam

Works perfect for my car, tells me everything I need to know. Great Product.

Kinda cool but also kinda pointless. I returned the gauge and bought a dedicated gauge for the info I was looking for.

Recomendo

i use for diagnostic tool for reading and repairing bad obd codes

Lo instale en un Gti mk7 y no me marco el boost que es para lo que lo quería , y aparte a la primera limpiada con una microfibra se rayó

Qualitativ hochwertig. Leider nicht mit einem Alfa 159 kompatibel

Ottimo strumento multifunzione, peccato che non legge tutti i protocolli della OBD2. Le OBD2 è uno standard ISO, ma ogni casa automobilistica usa un suo protocollo, i protocolli sono 5. La mia auto è una marca Italiana e usa probabilmente un protocollo europeo, questo strumento non legge questo tipo di protocollo. Evidentemente legge solo il protocollo Americano (statunitense). purtroppo è un grave errore che la AEM Elettronics non abbia pensato ad uno strumento OBD2 compatibile per tutti i protoccoli della presa OBD2.