as steve said look at the self adaption numbers in the live data.ideally they sould be very close to 1.00.if they have gone to 1.25 or heading in that direction replacing the MAF will usually cure the problem.[75-80k mls is common time for this]

__________________
David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg