wired wrong

[ulsterquattro]

hello i drive a a4 b7 2005 with just the audi concert 2 radio no Bose ,i want to put in a RNS-D navigation plus ,has anybody done this and if so what and where can i get the parts ie wiring harness adapter to make this happen ,cheers folks any help is a big help thanks

[zesh786]

can anyone give me any suggestions my audi a4 brd 170ps has almost lost most of its power as i was on the motorway my turbo wont boost correctly and my revs wont go past 3k rpm has anyone encountered this before

[Rob69]

yes - loads of folks have had that problem, there will be a fault code logged which has put the engine into limp mode, could be caused by a lot of things, it could be the turbo variable nozzle turbine ( VNT) blades sticking, or the N75 vacuum solenoid valve, among others. You need a fault code scan running on the car and post the results. Don't just go throwing parts and money at the car. start your own thread with the results of the scan.