how strange, the tdi seems to be fine now and I haven't even done nothing to it...!
it now accelerates above 70mph witout problems but acceleration isnt rapid above 70.. takes about 5 secs to move from 70 to 75 better than before i supose (seems to be an intermittent problem???)
however, will it improve performace if i go ahead and change the MAF anyway??? Will it make the car perform better with a new one??