weird exhaust leak?

[strokedoutlaw]

i just put a mbrp 4inch turbo back system and it all fit pretty fair i would say sounds awesome! i noticed that after the mid pipe there was a little fluid leak i cant put my finger on what it is weither or not its soot and condensation or mabe oil, its a black tar like substance? course now that i type this out i think i answered it but would like to hear if someone else had the same problem? the other thought i had just now is the inside of the pipe had like a vasoline type lube on the inside and mabe that is it, but help would be nice

[strokedoutlaw]

ok so i know i posted this a long time ago but i just did the ccv mod and fired it up and let it run for a little bit and looked to see if the exhaust was leaking anything, dont know why i did but there was a leak like it was condensation? i didnt think diesels did that? i know my ficm has been running low and i need to send it in to get it repaired and ive noticed its starting to haze on a cold start like an injector is going out, the fluid in the exhaust looked like it was watered down oil almost, anybody be able to help me out here?