My P38 diesel does about 17/18 mpg. I know this is too low and ws expecting 20-25mpg. Not sure what to change but thinking MAF sensor. I know this is normally on the air intake but can someone tell me where it is on this and what it looks like. Will replacing this make a difference to mpg...

Hi All, I've got a problem with the stereo in my 1997 P38. Have the Harmon Kardon stereos with amps and sub in boot. The stereo seems to lose power and i get no sound out of the speakers. The display goes faint but is still there so there is still power. I thought maybe some wires would...