Engine/Transmission (1998.5 - 2002) exhuast temps out of control

[kosanow1]

Had to put a new VP in so I went ahead and put some 275's in. With comp off I can run it over 1300 with no problem. With my 10000 lb 5r I have to watch the pyro gauge like a cat watches a fish tank. I been thinking about a BHAF and think this will help some. Any other ideals maybe something wrong with new injectors or pump. If I point my heat indicator at the exhuast manifold how much difference will there be from the gauge after the engine is good and warm. Or should I pull out the exhuast temp probe and put it in water with a thermomter to check the gauge. Runs 28 psi boost. I had no problems before