Very interesting reading the thread guys. I have exactly the same problem as described by crsh2 i.e the backfire sound when accelerating. The question is I had a diagnostic test which indicated the Air Mass Meter as faulty - replaced it - still the same! I have since been told it might be the dreaded wiring harness? Surely a diagnostic test would have picked up a misfire?? Just seems strange that I have exactly the same syptoms? Just trying to find a solution that won't require a remortgage!
Thanks!
John Moore