Could also be that the AFR sensors in the exhaust track (the first ones) finally gave up. Mine quit around 110k Miles. If you run an OBD2 scanner program, you might see some anomalous readings on the AFR circuits. This is what I noticed and prompted me to replace them both.
Just a thought, but check your exhaust for leaks too.
__________________
Corsairprime
2014 Nismo #462, GunMetal Grey, GT-R Start Button, AAM S-Line/R-Line intake and S-Line exhaust, Berk HFCs, Osiris Tuned at JoTech
|