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09 subaru impreza exhuast


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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?

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NA engines as susceptible to back pressure to get them to run properly. Removing the back box shouldnt impact it though. Did teh faults correct them selves when up put the muffler back on?


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