871 rough idle high egt

[Brock]

Friend of mine just bought a truck from a dealer, they just installed a reman head and injectors. When you fire it up, it sounds like your cold starting it in winter time for the first bit... sounds like crap and runs the same till it warms up.

Also has some real high egt, pulling trains hes 1100 degrees.

Demandate

Did not replace exhaust pressure sensor so I told him to get that done asap. I've ran all the typical cutout test and turbo tests and they seem fine..

Thoughts?