just got a forge recirculating and blo off dump valve for very cheap sounds class but the car runs like **** if i put my foot down. could this be a boost leak? the valve can also change to a recirculating one aswell and runs really good. will i have to stick with the **** sound (old granny fart) of the recirculating 1 or will i be able to sort the bov one? any sugestions welcome. cheers jimy.