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ya 87 is regular here in WI and I usually fill up with mid-grade to be on the safe side. I'm hoping it's not running too lean, but I did notice when I pulled my plug wires that white dust was coming off of them which I believe means I might be running lean. I don't drive WOT much, but I really should think about getting a tune. I appreciate the advice.
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DD: 2003 Ford Focus ZX5-65mm TB, Intake, Long Tube Header, 2.5" exhaust, UDP, Tom's Tune. Almost 200k miles and still running strong! 
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