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So update...
I couldn’t figure out the problem myself so I took the Z to Ghery at the very reputable Garage 54 shop here in the Los Angeles area. Ghery works on the S54 multiple times a week and owns an 850hp Z3M. Very honest and friendly guy.
He took apart the vanos and gave it a good polish... had to swap the seals of the pistons. The lack of pressure wasn’t allowing the vanos to adjust for rpm which was causing the hesitation and limp mode.
But after start up, the hesitation and limp mode is gone but the correlation code is still present.
Intake to crank timing code upon wide open throttle.
He’s swapped cam intake sensor, crank sensor, tore down my vanos a second time to see if he missed anything but still isn’t sure what is causing the problem.
At this point I’m really thinking it’s the used cam since there’s no where else to look? He’s swapping the intake cam this week as a final guess...
wondering what anyone’s thoughts are on the potential problem?
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