Well sorry to revive and old thread but what results did you get?
I took my engine (N62B48) apart and did a bunch of things, replaced everything I could, did valve stem seals, timing chain, guides etc. Now can't seem to start my engine. Checked a couple of cylinders for compression, they're both at 100psi. So I'm not sure if something is messed up or if that's normal due to valvetronics?