is it running lean at that speed?
what colour are your plugs after the thrashing?

i wouldnt know if it was running lean tbh. the plugs i took out looked ok when i changed the coils. although they had 3 prongs on and the ones i put in only had one, would that matter?

i know you mentioned MAF the first time round but dont have the money to spend at the mo as im on the edge of redundancy!!!