Nissan 370Z Forum - 2013 370z Key Fob Issues

Currently i have Uprev tune by PSI Proformance, Stillen Super Charger (getting removed for turbo later), Level 10 Auto Transmission full build with Torque Converter, Wiseco 9:1 Pistons, Eagle H Rods, New Bearings, Stillen Headers, ART Test Pipes, Oil Cooler, Transmission Cooler, Better Head Gasket, Head bolts, After Market Remote Start Unit, After Market Stereo

The reason i underlined the After Market Remote Start was that i believe it may have affected the BCU. Currently the car is at Nissan and it is unable to turn on due to no key fobs are currently programmed to the car. The After market remote start was not sensing the key fobs when we put them into the key fob holder to program the Remote Start so the techs at Excalibur told me to take the keys for reprogramming to Nissan. We did this, and what happens is the BCU is wiped of all known keys, and then you program the keys again into the unit. This was attempted and now when a key fob is inserted into the key fob unit it does not do what is intended, which is program that key to the car so the car can start. The installation of this kit required only 1 wire to be cut which we did, in the diagnosis we uninstalled the remote start kit and soldered the wire that was cut back together. This did not help. At this time Nissan is telling me that i need to get a new BCU as that is probably the issue.

Any help would be greatly appreciated as to whether or not they are blowing smoke up my *** and just trying things as the BCU is non-returnable once installation has been done.