well between 800-1000 or 800-900 rpms is somewhat normal idle when parked....at what rpmm is it droppin to...now for headers u can try ur local junk yard for oem headers or put up a WTB thread stating that ur lookin for oem headers for the 7g or call a mitsu dealership and see what they can get..it u want aftermarket u will need to order ones for a 2g spyder non turbo...but ask around or search there are topics out there stating which headers are the best...
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