first thanx to blade35 for the response and suggestion.checked map sensor hose all clear for $50 bucks replaced sensor.that cleared map sensor code but unfortunately not the smoke and misfire feeling i described.now realize i developed an exhaust leak at my passenger side manifold, that obviously isnt helping the turbos jerky boost response.as for the smoke i'm gonna do an oil change tommorow and add hot shot secret just in case i'm suffering stiction. also gonna to follow the suggestion of opening upper fuel filter and putting injector cleaner in straight .think i've got multiple issues all at once hope i'm on the right track but any further advice or ideas are appreciated.i hafta say if it wasn't for the ideas advice and shared experience from all on this forum my 6.0 experience would have died a quick death thanx again....