it's all white smoke, similar amount of smoke to my 335 with catless downpipe.

The larger amount of smoke came right after I cut the resonator out. It was minimal beforehand, I always thought large amount of smoke is a byproduct of no resonator/cat on car.

AFAIK, before I brought the car (it was owned by a BMW mech before). He did valve cover, CCV, and a bunch of different hoses.

As far as my visual inspection goes, I don't see any leakage in the engine bay. But I can't go further yet since my garage is taking forever for the contractors to build.

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2002 X5 4.4
2007 335i - catless DP, Cp-e CP, CAI, MHD tuned ~17psi, AG m310 19's.