The other day I just started my car and brang it into the shop. We just got a new temperature gun. I drove it for about 20 min, let it sit for 10 min, then drove it for about 2 more. My intake manifold was reading about 105 to 110 degrees, the header was reading about 90 or so, then the intake pipe was reading in the 85 range. I didnt know that the IM go so hot.