I read on here somewhere that the Inovate O2 wideband reads colder than others. i think.

I have an Inovate O2 and i have it in the j-pipe I noticed that their is not much of the tip in the pate of exhaust.

my question is what AFR am i shooting for with this o2 sensor and placement of sensor....It seems downstream is cooler. I know it's not a heat gauge. I just dont want to melt down if possible..