hey guys hopefully someone can help me out. i got a 2004 6.0 and it’s got no low end power it’s like the veins on the turbo aren’t moving but my exhaust brake works. so the veins aren’t stuck. i read on a different thread that the 03 engines got a flash that didn’t use the exhaust back pressure sensor so all i can think of is my map sensor. i don’t have any codes for a map sensor or a ebps or a turbo. it’s straight piped and the egr valve and cooler fell off.