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Just wanted to report that I have about 3600 miles. chirping on and off.
AND I have noticed that if I gas up 91 w/o ethanol I never hear/have any chirping of any kind. and if I gas up 93 with ethanol, after maybe 20-30 miles, the chirping is there again and it's just really annoying. Tested it on 2 other FRS's and the exact same symptoms. So I figure it was a ethanol related issue. afaik, it doesn't affect performance or drive-ability yet.
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