I've had "luck" with they're cars. 3-5 WOT through shift point's, will bring from 150hz to 157hz for my Altitude. But there Trucks! I can't get the 4.0, 4.2, 4.6, 5.4's to change! (yeah, "Blue Oval" insignia) I've done drive cycle, re-set KAM, WOT till 85mph ... Login to read more.