Astra coupe turbo sound 250bhp z20let

My coupe turbo

[@rigadig2011]

hi mate how do you get your dv to work like that,,mine hardley makes a sound,been told its the resert valve,needs a washer can you help me out

[@WeekendWarriorYT]

sorry mate cant help you just buy a 2nd hand dv can pick a good one up for £40