hello if i posted the serial number from my turbo up here can somebody tell me what psi it is good for and little pieces of info like that. it is a garrett from airesearch the number is 9201-09 and the part number is dx107667. and also it does not have the wastegate acuator or switch on it anywhere. how does this work. what about a BOV, how does all of this work. what can i use. i have d80e's for the heads and i have hyper pistons. somebody told me about cast pistons used on 8-10 psi. what is a safe psi and this is for a carbed engine so what else would i have to do for a single turbo system.