WHAT IT DOES AEMs Wideband UEGO allows you to controll, and accurately monitor your Air/Fuel Ratio as a quality, and cost effective tuning tool. This AEM AFR gauge monitoring tool provides high accuracy data that is essential when tuning your engine. The item "AEM AFR Air Fuel Ratio 4.9 LSU 52mm Wideband O2 UEGO Controller Gauge S14 SR20" is in sale since Wednesday, September 8, 2021.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Turbos, Nitrous, Superchargers\Turbo Chargers & Parts". The seller is "tayfuncotuk" and is located in istanbul. This item can be shipped worldwide.