I've tried everything from the book.
small but not significant improvements after all actions.




In my case the culprit was (worn) delivery valves (fuel IP) so I had to
change those. Pricey .... for the US guys I recon it is easier/cheaper to swap IP ...




cheers
ChO




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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered