APSX D2_BOG D2 Digital Wideband O2 Air Fuel Ratio Controller All-in-One 2 1/16" (52mm) Gauge (ORANGE)

What a great display! Works like a charm. Much better than the other brand that starts with an a and ends with an m. Couldn't be happier

Worst buy I've had on Amazon! Item doesn't work just displays "A0" and nothing else. Try to contact APSX's customer service and no response. No phone number to call them, can only email. I could over look how cheesy and cheap the gauge is, if it worked. Will be returning and buying AEM gauge. The low price isn't worth it!!

Easy to use, great tuning tool.

I couldn't get it to calibrate correctly with Tuner Studio or Megasquirt

Good well manufactured product that performes well

ive bought this i think 4 times now and each times its perfect 100% recommend

Seems to be a quality gauge.