Hello,

I installed VNT turbocharger (BV39 from Nissan Qashqai 106PS 1.5dci) in 1.5dci 2010 with delphi dcm1.2 , that had previously wastegated turbo(KP35) after stage1. I have some issue with jerking of engine while moving around 1500-2000rpm.
I have no DTC errors when I check with DDT2000 . I checked something and disconnected plug from MAF sensor and jerking didn`t show up. Same was when i disconnected plug from EGR Valve ( while MAF connected ) - however then of course DTC about EGR or MAF was showing up in DDT2000.

What s the problem ? Does anyone know if it has something to do with EGR Maps or something and can be solved quite easy with remap ?