p0473 help
 

This morning I was pulling an 8000 lb load and this code popped up. After I dropped it off I was going back home and the truck jerked and blew out a big wad of black smoke and is running fine and making about 2 psi more max boost than usual.i was wondering if I should be worried about anything. Ive got fully deletes with a smarty on 100 hp and 5inch straight