Okay, sorry, wrong term. The valve that is in the exhause feed to the turbo, and is boost referenced, so when you hit a specific boost number, it opens and bypasses the turbo and dumps right into the exhaust. a WASTEGATE !!!!!
Buck
67 273 Dart GT
69 RT 440 Charger (SWEET!)
70 318 Cuda
74 Cuda Packin a 426 roller Hemi