on July 9, 2015, 1:58 pm, in reply to "Re: Vauxhall Zafira 1.9 2006 - DPF pressure sensor with one pipe #"
does the gauge and flow meter confirm the system is holding pressure?
What are the MAF readings at idle and full load?
Log Maf, rpm, IAT, and boost on the road at full load and post the results.