80FoxCoupe
Well-Known Member
- Thread starter
- #1
Upstream driver side (bank 2) has failed four times this year. I do have O2 extensions on driver side only. Could this be the reason? I run pump 93 exclusively with octanium every now and again. Doesn't seem to be any relationship between failures and octanium. Anyone using extensions with no failures? What brand extensions? Mine are the one supplied with ARH headers.
Sponsored