e53 boost related problem "I think"
 

Any Help or advice appreciated
I have a 3.0d 2002 had it 3yrs always been a bit sluggish after 2500rpm
Had it mapped egr delete and blank rear boxes removed and straight through pipes on rear
Even people who mapped it said its better but we all thought it should be better they'd done a "disco" couple of days before and that did much better
anyways
What it does is after about 20 miles exhaust tone changes goes 3x deeper and properly down on power
Towed a car 10 miles last week driver says no smoke whatsoever from mine even going up hill
Had car MOT'd last month flew through emissions 1st attempt
So its still useable and i use daily with no engine management light coming on
Bought cable and INPA software this is what came up sorry its in German


Error occurred 1. times at:

Motordrehzahl 224.78 1/min
Kraftstoffvorfoerderdruck 3.22 bar
Einspritzmenge 25.60 mm^3
Raildruck 174.70 bar
Fehler aufgetreten bei 202830.00 km

Error occured 2. times at:

Motordrehzahl 274.73 1/min
Kraftstoffvorfoerderdruck 3.12 bar
Einspritzmenge 23.55 mm^3
Raildruck 138.55 bar
Fehler aufgetreten bei 202840.00 km

Fehler momentan nicht vorhanden
sporadischer Fehler
Kein Raildruckaufbau

like i said earlier any advice appreciated.
Thanks for reading