Hi All Recently I picked up a little Ka Sport 04 plate which is great fun to drive, although a little juicier than I thought it would be But it has developed a strange fault and has lost a lot of power , Finds it hard to rev past 3k and sounds like its struggling to pull in air?? really loud front end noise but no going power I changed the Lambda sensor after some Googe searches but this hasnt fixed it, So I had a friend plug it into a fault reader which showed no fault codes, he noticed on the live data that the inlet valve flaps were not active.... ?? Tried a quick google which hasn't shown up much so wondering if this sounds like a common problem? If not any thoughts ideas would be a great help Thanks Nick