Hey, im having abit of a strange problem, the car pulls fine and then gets too around 5k and just stops pulling, it will rev past 5k but struggles. The car runs perfectly well under normal driving conditions and at full throttle upto 5k. Iv'e just changed the maf but too no effect, next step for me is to go back too basics and give it a good service including fuel filter and polen filter as i dought these have ever been changed tbh. But if anyone has any ideas why it may be having this problem any help would be great. Thanks in advance Sam.