fitted dump valve about 4 weeks ago and bypassed rear bcs and fitted a 1 way valve in oe dumpvalve... had no problems till today when cruising on motorway then sudden power loss and spanner light on!!!
did pedal test to find code P1106, reads loads of different threads on the matter and started to my pull hair out.. i took a couple of vacuum hoses apart and made sure had snugg fit when putting back together.. turned engine back on light still on ???? took it for a drive to see if the car had slight power loss still and guess what more boost and louder collins which is a bonus then ripped it along my road and light when out !!!! bigger bonus !!! hope this stays like it. anyone else had simular problem with p1106 as i was reading things like fitting new front bcs, rear bcs, intercooler sensors, spark plugs etc etc