right after i got my meth installed and tuned, i threw a P0171. it has been an issue for the past 4 months.

refer to this recent thread if u want more info. but basicly i want to know if methanol will burn up your front o2 sensor.

https://www.evolutionm.net/forums/sh...d.php?t=320169

 

sounds a lot like its your tune from the reading of your situation...have you attempted to get that fixed yet?