OP there's nothing wrong with your TVS setup, that's how hot they run. My IAT2 temps with TVS are usually around 140F cruising / driving regardless of IAT1. Ambients can be anything from 40F to 90F and IAT2 is around 140. Make a few back to back WOT pulls and you're seeing 160F IAT2. BTW I don't use the S hook so that's not your issue. It's just how hot the TVS runs. My 2.9 Whipple was worse.