Time to replace the Front 02 sensors,
From searching, the majority here is too stay with stock,

I do remember reading that possibly vette sensors stay hooter longer but require an adapter to work with the front connectors??
Any thoughts on this, I can't find the post though?

I'm running Arizona Speed and marine headers that have been Jet Hot Coated, No cats and nelson Tune.
After 5.5 years the sensors are finally acting up.


Thanks-

 

I got a set of Denso sensors in mine right now and haven't had a problem. were only like $80 for the pair too

 

If the stock units were working I'd say go back. The vette units have a higher wattage heater that work better with some headers due to them not retaining heat and throwing codes. Mine do this on the rear ones and the vette units didn't fix one side.