V8 Engine Tech (L76/LS3)
I've had rotofab, ARH headers, and custom VMS tune for 6months+ and no issues - now I get the following all of a sudden:
P0131 - 02 Sensor circuit low voltage
P0171 - system too lean (bank1)
P1133 - HO2S Insufficient switching
Checked rotofab closely for cracks or loose connections and...