Well first thing I'd do is get rid of all that *#$ DPF junk

 

Ive had some great luck with the TS MP8

 

ive had a ton of fuel problems w/ mine as well. p0148- fuel delivery error, p???? fuel rail pressure to low. called a cuple dodge dealers and cummins tring to find fuel pressure set point. all i got out of them was needs to be under 120,000 psi. and within 500psi +/- but couldn't tell me exactly. but could bring it in for $100 hr 4 hr min.

 

Shouldn't that still be covered under your warranty?