I recently purchased a Jet performance chip for my '03 3.8L. Only problem is, I can't seem to find the actual E.C.U. The instructions with the chip claim that it is hidden away behind the passenger side kick panel, but I had no luck finding it after I popped off the panel. Does anyone out there know where the heck the E.C.U. is located on the '03 six? Thanks 4 any advice.