Few questions I can't find answers to
I have a 93 240sx hatch and the previous owner put a N1 style exhaust. Right now I have a exhaust leak in the resonator. Looks like someone took a knife and made a hole straight in the middle. Could this cause bad MPG or something else? Its been there for quite a few now. I'm also wanting to replace my 02 sensor after getting that hole fixed. My knock sensor went out as well. Replacing that this week. I looked around and couldn't find the causes of a exhaust leak in the resonator. Anyone know? Thank you!
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