turboaudi
Registered User
sounds ****** awesome , but the car idles like a sack of **** now, i take it you need the proper vag ones or is there something you can do to help it idle properly
docurley said:Because the float just bounces letting out too much air plus you will not pass a MOT with it either, how do I know I learnt the hard way.
docurley said:There will always be some pressure in the system even at idle and what you see is the piston moving up and down with that little pressure which fugs up the idle, hence you need a twin piston which keeps it shut.
A4Quattro said:Dont want to rain on your parade but there is no pressure in the intake system at idle, in fact there would be the exact opposite, vacuum. so the piston on the BOV would actually be pulled tighter closed at idle.
a4singh said:what size as in psi is the standard turbo on a standard b5 a4. I'm not too sure like I've heard people say 10 pound turbos etc but i dont have a clue what it all means.... anybody have an idea? sorry to post it here, but seen as though we are on the topic of turbos etc. thought it might be more appropriate.
n sorry if I'm talking nonsense.
docurley said:Negative or positive flow, there is something there that is causing the DV piston to bounce when idle and it not doing it its self on a single piston DV.
A4Quattro said:Sorry but you are wrong!
There is only positive pressure in the intake manifold when the turbo is producing boost, which is does not do at idle.
A vacuum cleaner is free flowing but there is a vacuum at one end.
The engine is drawing in air and it does this by creating a lower pressure than is around it (1 atmosphere or 1 BAR or 15psi) all piston engines work in this manner whether they have a throttle flap or not, if you want proof find an old diesel cement mixer, they don't have turbos, and put your hand over the intake when its running, you'll soon experience the vacuum.