What i mentioned was the logical layout of the system, not the actual plumbing, a big difference there
The valve which you points out as the dump valve is one of the valves Im talking about. This puts the boost from the supercharger into the inlet of the turbo when the throttle is off. Actually a standard closed loop dump valve...
The main valve i depicted isnt viewable, as it is included in the supercharger. When a certain boost-level is reached, the inlet gases is taking a alternative route inside the supercharger. In this route, the supercharger itself doesnt affect the boost.
Very interesting system this actually.
Originally Posted by Itsmeagain
So has anyone got a diagram of how its all plumbed in on an S4? Its impossible to totaly see from all the enginebay pics ive seen.
Hexxon mentioned its a split system that meets just before the throttle...
Well look at the pics, the pipe between the the throttle and the 2nd intercooler is very short, and between the various pics you can see it from all sides and all thats fitted to it is a dump valve (with a very long tube exit which vents by the screamer pipe for some reason
), no special valve that switched between the 2
Hence why it always seemed to me it went filter-turbo-intercooler1-supercharger-intercooler2-throttle, as that how all the piping in the pics make it look