hi i,ve just bought a 2002 525 turbo diesel bmw,now i,ve been told of a mate of mine to buy a dump valve for it,now i,m 35 and its a business edition model so i told him i,m not 18 anymore and i dont want my car sounding like i,ve tried to make it "boyracerish"with the noise!he then said they sound different to the normal petrol ones and its not for them kind of purposes its so it preserves my turbo from premature wear and tear,after he finished it sounded like a really good idea to put one on,and pretty stupid not to!now has anybody else done this or no if its possible or if it,s just not worth doing!thanks
