Need a little help guys. First off I have a 2008 6.4 with a min max tuner, afe intake, DPF delete, and EGR valve/cooler delete. While towing my camper started leaking exhaust pre-turbo. I towed the camper about 100 miles to make it home. Found down pipe expansion joint cracked. I deleted the down pipe and moved exhaust pressure sensor.
After the repairs I've been having some drivability problems and can't wrap my head around what's going on.
Overall truck has lost power and lower mpg... feels like shes dragging an anchor. While towing I am seeing higher than normal exhaust temp and lower boost. Checked KOEO exhaust pressure sensor showing 3 psi. Exhaust and boost pressure are within 6 psi of each other. Boost seems normal up to 20 psi and is very slow to respond over 20. After 20 psi it seems like there is a lot of lag and slow to build pressure. Curious if anyone has any thoughts on what could be causing this issue. Please help!!