:thumb2 hi just bought this 2.7tdi x reg terrano se+ and need a maf for it as when connected does not pull away from a snail and at motor way strugle to keep 60mph on the hills but when i disconnect the maf things are really good again so hane put it down to that but where is the best place to buy 1 and when i go full lock whith steering and drive at same time i get a knocking noise is there a common fault i need to look at frist maybe a ball joint just like to be put in the right direction thanks for any help in advance.