I have a synergy 2 with the maf side switched off and with the standard bosch maf. I am considering changing to the peirburg maf and switching on the the maf side on the synergy. Although I get a fairly good performance with the present setup I think it may have gone out of spec especially on the low end torque. I have done 61K and regularly clean the maf but I am now thinking its time for a change , would the car benifit from fitting the peirburg ?

Don't leave it disconnected for very long though as you'll drink fuel like it's going out of fashion. I would suggest you'll have the information you need within say, 10 miles.