my 06 is blowing blue smoke

[Hiteckredneck]

I have an 06 F350 with the 6.0. The only mods that I have done to the truck is a stage 2 AME cold air intake and 4"down pipe and 5" from transmission cross member back. I eliminated the cat. A few days ago I got on it pretty hard and every sense it has been blowing blue smoke a lot shortly after start driving.But the longer you drive it smokes less and less. It is not using any oil or antifreeze. I have been told that the 6.0 needs back pressure witch I have taken away. So I have been told I will probably need a tuner and or a custom tune. Anyone have any ideas?
Thanks
Rick

[Cajunrgfm]

Ya, blue smoke is too much fuel in combustion chamber, either to aggressive tune or bad injector, do an injector balance test for mechanical cond. of injectors, before you try to tune it out.

[IdahoF350]

If the above suggestion shows no injector performance issues, it could be engine oil in the exhaust stream. Pop the downpipe loose from the turbo and look for oil in the exhaust pipe and turbine housing. A bad seal in the turbo can allow oil to weep into the exhaust housing and that oil will smoke light white to blue under normal driving.