blowoff valve questions

[Jukka Majanen]

Hi 

Robert:

> Yes.  There's also an arguement that blowing to atmosphere vents the
> pressure wave more quickly and completely than blowin back to the intake

And why to put there pressed warm air if You can as easy suck cold..

> which would make it better for lag. Having little experience in the
> matter, I can't really say which holds more true.

Me neither, I just believe B/O is more effective, but B/P is a must :)))

> Some of those actually inject fuel into the manifold as an anti-lag
> measure.  The fuel ignights in the exhaust manifold and keeps the turbine
> powered.

Right and then B/O is the only possibility to not to warm the air, again...

> > Well -hard to say, what is the right way...I myself have routed B/P from IC`s
> > in pass side to the last angle of turbo intake, quite long 1" line :)

> All depends on your needs, I suppose.  For my daily-driven 5kTQw, I expect
> to route it from the throttle side of the IC down to the same place.

I though all US 5k:s have a dual pass IC, but only later 100/200 Euros the 20v:s
single pass? If You have dual, You can find both; in- and outpass on that side.

This is again theoretical; I wanted to keep shock pulse, there exists before B/P
opens, in the intake ( drivers ) side of the IC to protect it more. Maybe not 
worth, but now it is there :))

One thing I did note, or actually did not note. IMO there was no reduced lag after 
the B/P installation. But it is nice to know there are no pulse shocks ( I do not mean
only the stall or surge of the compressor ) in the system now, when I am driving with
2.1 Bar and sometimes shifitg fast...

Regards
j-pm