My o2s are beyond bad and they haven't thrown out a code in over a year. They're only $25, worth a shot.
Also, along with this, does anyone have a write up for a TPS change?
'99 TJ Sport: 4.0L 12X,XXX Miles, 32RH Auto, 3.5" Suspension, 1.25"BL, SYE, D35 4.10 D30 Aussie Locked.
2013 CB500X: The toy