AFR Gauges
Currently running an Innovate setup. They can be a bit finicky about grounding, but they are one of the few options out there for decent analog sweep gauges. If you want max accuracy, don't care about looks, and don't mind paying extra, the Ballenger Motorsports gauge is my current recommendation:
Home » Shop » Wideband O2 » O2 Controller » AFR500v3 - Air Fuel Ratio Monitor Kit - Wideband O2 System
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