Now if I posted the undercarriage of my E30 it will spoil all the happy brain chemicals y'all are experiencing. --- While I'm here, I did my second PCV overhaul yesterday. Practice aka confidence helps with this job, took me 10-12 hours opposed to 3 days last time (thanks intake banjo). That include...

Try not to engage the turbo until you get that PCV taken care of. I feel like that sputter could be related to a dirty intake, but I'm still a novice in these things. Refresh your fuel injectors when you have the rail off during PCV service. It's not unlikely doing a real nice combover during intake...