|
is the wideband new and fresh installed ?
if yes i wouldn t think it is wrong, and he should probably rescale the front o2 sensor to it
( why do you have a wideband installed? are you FI?)
if it was working before, and now suddenly super rich, it is probably fouled then and no other way than to change it with a new sensor from Aem, those things have short life
but it s probably a dying wideband sensor anyway, my aem 30-300 started to do the same thing, with WOT suddenly at 9.5-10 and then jumping to 20 or leaner in a fraction of seconds
you can also only change the sensor without the whole controller
|