about using a 4 way T for the boost pressure sensor of the AVC-R. I think the fact the boost is being metered one place and being changed in another is part of the problem. Also according the corky bell the further down the pipeline the wastegate signal is the more power you make but also the higher chance of overboosting becomes. If you make it to ATL give me a call and we can try out the few things I am things of.