I put mine in the same exact spot which is fine as long as the truck is moving. If its been stopped for a bit the ambient head off the radiator does skew it a tad. I would mount it where it will be safe and as close as possible to where you removed it from as the computer does take the speed of the vehicle into account if you have everything hooked up right.

Brian

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01 Edge Ext Cab
4.0 4x4 White

Mods:
Custom Winch Bumper, 9000lb winch, Custom Skid Plate, Custom Rock Sliders, Off-Road Lights, Explorer: OHC, Auto Dim Mirror, Lighted Vanity Visors, Power Seat Rails and EATC. Other little things I will remember to add later.