New to posting. I have a 2007 big horn 5.7 only thing done is dual exhaust with glasspacks. Just under 28,900mi. Check engine light came on so I took it to local parts store too get code read. They said O2 sensor before cat on bank 1. So I changed both sensors before cats. Lasted about a week, and it came on again. So I took it to local dodge dealership and they said O2 sensor before cat on bank 1. They changed sensor, Lasted about 2 weeks. It just came on again. Any suggestions? It had superchip module but I took it out when I changed sensors first time.