ok , I got my cheap ass prosport gauges for around a 1.5 years and so far they are working perfect (knock on wood lol) also I have a autometer wide band for 2.5 years and to this day is still perfect . when i finished my swap the car was reading really rich at idle around 11.5 a/f I tought it was the wide band so i borrowed a motec wide band and it was reading almost the same with in .1 of difference .I let you know about accurency on the prosport when I install the aem stand alone to compare numbers