Did you know you can alter your EGR on certain models ?
You need ISTA<= 4.05.x, so Ive added 4.01.21 + 4.04.12 to the download folder.
EGR valve / Open or close: We read ...
Version 4.04: Vehicle Management, Service Features, Drive, DDE, Comparison Programs, Exhaust Gas Recirculation, Select: ABL Exhaust Gas Recirculation Compensation
0.0 = Factory value
0.1 = Egr closed 10%
0.2 = Egr closed 20%
0.3 = Egr closed 30%
0.4 = Egr closed 40%
0.5 = Egr closed 50%
0.6 = Egr closed 60%
0.7 = Egr closed 70%
0.8 = Egr closed 80%
0.9 = Egr closed 90%
1.0 = Egr closed 100%