AEM30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

Works just fine for my tuning needs

Very accurate, and is the best thing I have bought for a carbureted engine. Very easy to read, and has been going strong for over a year now. No complaints.

Reads the same as the accessport in my sti. Replaced my innovate lc2 with this. Far more accurate, way simpler, way easier to install. Looks great, an essential for boosted cars.

Love it since I've had it no issues at all. If you got this and are trying to figure out the wiring for a 07-14 chevy and a Pro-Link just add me on FB and message me and I'll shoot a pic of the wiring. Brian Harvill (verified)

This is the best product on the market bang for buck. This sensor provides a wide range of measurements of rich and lean and provides provisions for a data logger to utilize the information off the sensor. Every component is of quality and is sure to last given proper installation and setup.

Wow, I ordered an AEM Wideband late Sunday evening on July 13th and when I ordered it said that it would arrive Saturday. The next mourning I checked it and it had shipped but was still set for arrival on Saturday. Today I get a notice saying that something had changed so I clicked on it and My Wideband Sensor had already arrived at 12:30. I couldnt believe it. Ive never had anything that Ive ordered ever come in that fast. As far as the product it looks and works perfect.

What I ordered

As promised, I'm updating this review based on the customer service experience. I installed this to replace a dying old 14point7 gauge and it was DOA. It just read "SEnS" when I powered it up, despite having good wiring continuity. I emailed AEM with a specific description of the issue and they had me call and arrange for a replacement, there was no hassle and the customer service people were friendly. When all was said and done, I put the new one in with the already-installed wiring and it works fine.I like the responsiveness of its output for tuning and the sweeping LED part of the display is useful for visualizing transients like acceleration enrichment when you don't have your laptop hooked up. The only negative about this unit is that the bezel is thick compared to most other wideband gauges, and based on the form factor of the actual gauge part the size of this part is pretty excessive. It's also gloss black, which doesn't match the satin/matte black of most interiors and gauge bezels, but I just had to remove the bezel and paint it to rectify this.Tip: don't go through all of the hassle of running the wires and stuff until you bench test it out of the box. That way you know it's functioning before spending a few hours fighting with grommets and taking interior parts out to run wires cleanly.