please help....

[fordpower21]

I have an 2001 f250 with a 7.3.

Yesterday I was driving my truck at a normal speed (35mhp) and out of no were it started to dog out. The code that popped up were p1247, p1316, p1249, p0238. Also p0678 and p0671, but I already know that those two codes are from 2 glow plugs. The mod’s which are on my truck is a 4 inch exhaust, intake and bully dog triple dog programmer. Where should I start? This is my daily driver, so it’s a must that I get my truck back on the road. Thanks all.