I have 400mi on the new engine in the Ty I just bought. I jumped on it for the first time today. The boost flew up then tapered back to around 7-8psi. I tried it again and it repeated the problem. Does that sound like a wastegate rod adjustment? Also, what RPM should the WOT upshifts be? Mine is around 4500. I'm not dying to fix it because I"m still going to take it easy for a while but thought I would get some opinions.