Hello chaps, i'm after a bit of advice (No change there then )
with regards the the built in dump valve on the c20 let turbo engine, i understand that it has to be restricted when you put an atmospheric dump valve on. Anyway, when i brought my car it had a bailey dump valve already on but i'm sure the built in valve has been left, which, as i understand it loses boost pressure. How do you go about blocking off the valve on the turbo??
is there any instructions on it..?