service engine soon. light.
2011 370 z Nismo. , got a service engine.light and only symptom I notice. is increased idle== entire time running. only mod is fast intensions exhaust and cat delete down pipes. fast intensions. so all but long tube headers. second time or third. and will eventually reset back to normal. anyone have. a clue. 28 k miles. just annoying. had to shop one. but wasn't doing it of course when I took it. thx D
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