I have a 2005 Nissan Sentra 1.8 manual trany, I have installed an HHO device. My 1st O2 sensor has like 5 wires (Wideband) There doesnt seem to be any help at all for a wideband sensors, am I wrong? I'm noticing great gas mileage on my scangauge of +/- 50 MPG average but my overall fuel economy is remaining dismal. Im convinced I need more than my MAF sensor enhancer, some type of EFEI but there seem to be none on ebay or anything that can help aa WIDEBAND sensor, HELP!!!!