04 GTO with 408. FAST LSXr intake, factory LS1 MAP with correct scaling for associated MAP. Scanner says MAP is stuck on 10kPa regardless of KOEO or running (it will actually crank and run halfway decent) but never a change in MAP kPA. Verified scaling. Checked with (2) NEW factory MAPs. All the same. Sound like an electrical or harness issue? Anyone had this problem before? Will throw a P0107 almost immediately after startup. Also, MAP range has been adjusted for the cam but shouldn't cause this.
