i got a galaxy 98 19tdi, got power loss at 3500 rpm. i have changed the maf and still doing it... any idears people?? like the n75 valve or the wastegate valve??? maybe....or is it somthing more than this... can i bypass the n75,, direct link from turbo to wastegate?? any one tryed this,,? is ok to do or will it bang...?? cheers people...