the only problem I see is the possibility of starving the turbo for oil when the bpv is activated. Talked to beans about this when I put on the D66 from them, and he said that they had some problems from truck in montana burning out the turbo bearings. They quite using the bpv as an exhaust brake, and the problems went away. He wouldn't go so far to say that using the bpv was the problem, butttt. I was thinking of finding an actuator cylinder and modify it to work. Might save a few bucks.