I am new to the TDR here, My VP went out recently at 56K. John at Floor it diesel told me about the II HRVP. I am extremely happy with it after 3 weeks, the power gain is more than I expected (seat of the pants) I have not even hooked my pump wire tap for my comp back and dont know if i will. Next II phat shaft turbo..... eventually, after a VP replacement its hard to recover.