Drew24

So my cousin has a 99 vette ls1 and he keeps going through o2 sensors almost every couple of months. He has tried all different kinds of o2s but they keep going out. His mods are long tube headers with gutted cats and a tune that deleted the rear o2s. He also has a fast intake manifold and CAI. What could be causing this. He thinks it might be an electrical issue what do you guys think?

Thanks