It started with my exshuat braking on the flexi part of the down pipe my friend sed he could weld it he put it back together and it was blowing still so he took off n checked the turbo which had a cracked exshuat housing so I got a very good used one it went on and was fine for all of five min no lie I drive home fine I drive to work the next day the weld broke which was less the 25 mile alround trip so got new down pipe as I pulled out of the garage it made te same whooshing noise it did when the last turbos housing cracked now I'm at a loss as iv in so many words fallen out with my friend and my cars no smoking whistlein as well as sounding like a tank now before this started I asked him to check it as the temp gauge stopped workin to appoint it would only go up when I stopped it would go down when pullin away it never over heats but I feel it cooks its self I never hear the engine fan cut in which sounds daft but they pressure tested it and sed the water pump sounded fine and it was fine they ran the car and sed it dosnt over heat but surly at sum point i would of herd it I had the car 6 months and got about 100 mile between the garage it's takin gettin a bit much thanks for ne replys