Actually, you just have to uninstall ELS, something causes it to screw up NOOSE Backup, Right now, I'm running the non ELS Vector Chargers, crown vics, tahoes and impalas on GPM, the non ELS Slicktop by Caine, and I replaced the ambulance with the 2.0x one, and I replaced the noose truck with the FBI Chevy Tahoe. I can spam the backup key just fine.