sometimes my car just doesnt feel like its got much power compared to usual then suddenly for no reason it has full power... this started happening about 2 months ago, I have recently done a full service but that doesnt seem to of sorted the problem The car isnt running lumpy etc so I really havent a clue what could be causing this powerloss sometimes, anyone got any ideas what could be causing this so I can start narrowing this down to something??? I dont have a boost gauge yet so cant say whether its running on full boost or not when the car feels slow.

 

..Bump.. anyone any ideas? i'm worried because I was seeking more power soon, already have pink injectors/uprated fuel pump etc next is turbo, exhaust,re-map. But dont want to do all this if i have a problem somewhere else