Don't be in any hurry to open it up until you've tested it in situ and then checked / cleaned the boost sensing pipes, adjusted the valves (if they're quiet you know they need adjusting !) , removed and pop tested the injectors, so on and so forth ~ unless everything is in perfect order doing modifications will make things worse and simply piss you off .

BT, DT and spent 50 years working on engines that others had screwed up by ignoring the basics .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better