I have a Vauxhall Vivaro 06 1.9 diesel, it has been to several garages & is still coming up with 1815 Inlet air / Boost pressure Circuit fault, it has had the injectors wiring redone due to rubbing through, a new Boost Pressure Soleniod (although only one & someone said it has 2?) a new EGR. The glow/mangement light comes on and van loses power as soon as you want power ! (seems to be anything above 2500rpm or 70mph) it also wont rev up for the first 10 secs or so when you start it (but hey I can cope with this but not sure if part of it) as a lone female travelling to dog shows in the early hours of the morning this is causing me some real concerns :( can someone pls give me some ideas before I allow the garage to throw more money away for me!! .Many thanks