I swear I saw another thread on this a few days ago but cant for the life of me find it. Ok so yesterday I finally managed to get hold of a Astra Coupe Turbo (YEY). It needs a few bits fixing on it but was cheap enough to compensate.
My question is that I can hear the turbo spool up and the dump valve really loudly through the air vents (in paticular the drivers side ones). Ive had a few turbo'd cars in the past but nothing that sounds like this.
Please can anyone point me in the right direction as to what it could be or indeed the other post which I seem to have lost.