lack of powweeeerrrrrr!!!

[Howardvwgolf]

my car has lost most of its power above 3k revs under acceleration. My first though was that it is leaking boost somwhere, i.e the diverter valve as i assume the dv is the origional (55 plate gti) and it seems a common fault that they break. Im going to borrow my cousins vag com. Does a broken dv throw a specifc fault code?
Howard

[Hedge]

You would need to do some logs of requested/actual boost and N75 to get a good idea.

Good luck.