Good luck with getting that nailed down.
I was having an issue with a leak because a I wasn't getting a good enough seal on my boost tubes nor my TIP and I had a bolt from my DP come unthreaded and backed off. Thankfully I had a replacement. I think I was also battling a dirty fuel system that...
Yesterday I finished putting everything back together and checked over all bolts and vacuum lines.
I ended up installing a catless DP, S3 turbo, JBR EBCS, new map sensor, and new spark plugs.
I had to get used to the oil, coolant and allllll that PB blaster I used that needed to burn off lol...