09 subaru impreza exhuast

[tomgilbert45]

i have an 09 impreza non turbo and i wanna do a muffler delete and put a cannon out the back but im not sure if it will mess with the o2 sensors as i too the muffler off the other day and drove for a bit then the check engine light came on so did the traction control off light and i cant use cruice control either any suggestions on how to fix this or if a cannon will mess with the sensors also?