Question for you turbo...

[Jorgen Karlsson]

> AGreed,
>   I see the point being made.  \
> Question...some Bypass valves open by vacuum and not
> manifold PRESSURE.  If its vacuum that opens it then
> there should be little pressure in EM to overspin
> turbo with.  RIGHT???
>   l8r
>     TOdd
>

It is really pressure difference between the upper and lower side of the
diagraphm that opens the valve. If you have 10psi in the intake and 20psi
before the throttle body the vavle will open.

Jorgen