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High pitch noise coming from passenger side

Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which

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High pitch noise coming from passenger side

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06-18-2009, 05:38 PM	#11 (permalink)
CCCLXXZ Base Member Join Date: May 2009 Location: Chicago Suburbs Posts: 164 Drives: T/S/MB/6 370z Rep Power: 402	Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related. It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

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