Im just on my way up to the dealer so hopfully it gets sorted,

i havent cleaned it or checked the ECU for dirt but i did replace it after i took it out but no luck..its realy hard to drive the car without it! it wont go over 3,00revs (dont want to ether!) cos it will hit the boost limiter

Also is it normal for the car to be running rich and making the exhaust go black (only since the car has had this fault?)

i shall lat you all know how it went im sure the chip is faulty tho