Octavia Scout TDi BMM with a lumpy tickover !

Hi All, My Octavia Scout 2009 TDi BMM engine has developed a rough tickover, people have suggested monitoring - injectors,boost,egr,coolant temp, but when I go into the options there are more than one tick box option for say 'coolant temp' so which would be the best 'locations' to monitor for my problem ? and if I can put a log on here which is the best way 'graph' or 'log' to save it and then transfer it over ? cheers Stuart