In my experiences with compounds, the primary you have is too small to be using with that 62. But either way, your secondary isn't making much boost at all. On a 58 secondary and 78 primary set up we've done the primary was making 35 and the secondary was making 35 and this was all before 2,000 rpms, and you had to work hard to get the pyro hot. This was on a 12v with plenty of fuel. I usually try not to over spin either turbo because they make an expensive mess. LOL