First off I have no logs as of yet, these will come in the next few days, all I have is a description of whats happening. On full throttle the boost builds up to 19-21psi and just after this the throttle body closes, opens, closes, opens, closes, opens and so on until red line, does this in every gear its not violent or jerky its pretty smooth. its not closing fully (Last log I did shown a sign of this but since then I haven't done any other logs. On previous log I saw 30 odd percent when I was giving it WOT. So in a nut shell, what could be telling the throttle body to back off? If I am on honest I must say the actuator isn't in its ideal position, the rod has to be pulled over to waste gate arm, this makes the actuator a bit harder to control wastegate arm as it only wants to open at 8psi but with rod not connected it opens at 5psi so I know the preload is fine. I'm sure this could be my problem, but I thought I would ask if there is anything else that could be causing me this problem? Thanks.