What do I have to change to make that fluttering noise rather than have a a dump valve, I know most people dont like them but the car was set up with it on (aleady set up when i bought it) and am abit werry of taking it off!
but I love that fluttering noise,
I couldnt tell you spec of the car as all I know is its chip and running 13psi but peaks at 15psi, have a big front mounted intercooler on it, with a pipercross induction kit on it with a garrett t3 airsearch turbo on it (i are t3 but please correct me if wrong)

Thanks for your help in advance