I am new to these 6.0's and started working on a Lot of them at work now, so needless to say, I think I will be on here alot! Lol! Ok I am working on a 03 6.0 with a cold hard start and big lack of power, ficm has 47.9v oil pressure good. The concern is my eb readings, they fluxuate between 4-65psi at idle. When stalling the engine they go upwards to 200 psi. Made sure the eb tube was free of blockage and also replaced the eb sensor. Possible stuck viens in the turbo? I can watch the datastream on my scanner and see the duty cycle change? Well thanks in advance guys!!!! Hope fully I get good at these 6.0s!!!