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hell i donno if this the right section but here it goes...what is the best route for gettin my speedometer corrected for the 24's...its around 5mph off and its buggin the piss outta me. i called the dealer and they said it was gonna be around 200 damn dollars or i could buy an aftermarket programmer for around 240. any other options? or if anyone has a used calibrator they would like to sell me for this truck i would be interested. thanks...its a 2009 ecsb with 5.3