Got my cel read today. If I'm correct I need a new upstream oxygen sensor? Opinions?
I did forget to mention an important piece of information: when the TP's were put in we did use an impact and had to cut one the bolts off after the head rounded out. That's the reason I lean towards the o2 sensors.
https://www.flickr.com/gp/99777373@N05/ow6tJ8