Its a long shot, but could be the electrical steering. If it is aligned and still pulling, it might be the electrical steering "dead zone" or center. Could be off.
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08 GT500 convertible red package (Black w/ Red stripes) /Ford Racing Exhaust /Cold Air Induction 560hp
10 Porsche Cayenne GTS Black w/ Black Wheels 408hp
11 M3 Silverstone w/ Silver Novillo Leather /Tech /Premium /19" /DCT /Ipod 414hp
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