saying that do any of u remember the carbon deposit removal spray 10kboost???? i got some for my 1994 325 bmw 5 yrs ago i sprayed it in following the instructions and it fcuked the car right up, i rang the company and they paid the full bill to repair it from bmw.....new afm, 2 new lamdar probes plus full diagnostics and labour total bill £1100 and very good customer service .......so stick in there and u never know