http://www.youtube.com/watch?v=BnHGbN67PIM
Uses a wastegate actuator to set normal closed and open the vanes, and uses an electronic servo operated by a switch in the cab to close for exhaust brake function and warmup.
Uses a wastegate actuator to set normal closed and open the vanes, and uses an electronic servo operated by a switch in the cab to close for exhaust brake function and warmup.