Hi, i have a 2009 sport 3.0, the previous owners changed the inlets, egr and cooler, also throttle body. When driving there is a very loud screeching noise and the as the revs lower goes to a whistle before stopping, it is coming from the passenger side and sounds like near the egr/cooler, has anyone had this before and any idea what it is as it has been to the gargae and they aren't sure. It definitely sounds like some sort of leak but what would make that sort of noise under the circumstances. Any help would be appreciated. Thanks