I have an Audi A4 1.8T 1996, I have had a boost splutter thats been going on for a while now and i cant solve, it builds up boost dosent go past 10psi ( just how i like it) and it holds but then suddenly splutters and drops down to nothing and takes a while to build back up, i have a new turbo new pipes and new DV, these are the fault codes i have.

18010 - power supply terminal 30
16500 - Shareware version
16705 - Shareware version
17978 - Engine start blocked by immobilizer
00532 - Shareware version
00670 - Shareware version
16505 - Throttle position sensor
01262 - Shareware version
16487 - Shareware Version
01247 - Active Charcoal Filter


Pleade help, Thanks
Mike
Michaelparkyn1990@hotmail.co.uk