Ok I got marketplaced on a 95 2500 . It starts it goes and it Carrie’s (so far). The thing is , they took a paint rig to the entire truck. I mean inside, outside, engine, under, on top, behind, and places yet to be found. Stickers are either gone or painted over and a good portion of the unnecessary (apparently) “stuff” under the hood is gone. Smells to high he’ll, super rich I think. Anyway, how beneficial would it be to replace all that fancy egr vacuum line environmentally crap ? When I start it, hot/cold doesn’t matter, it lugs and glugs like it’s full of molasses for ten or fifteen seconds then the rpm’s shoot up and even out and time to go. I do like to get it to not smelling so bad first, where should I start?