Bypass/Dump valves

[Jim Lill]

New info...

These things are used on Saabs and are called overrun cut-off valves by
Bosch. They are P/N:

0 280 142 001
0 280 142 102
0 280 142 103
	
They are about $22-30 jobber, $40-60 list. I'm not sure what the
differences are yet. 

Turbonetics lists one of them (not sure which yet) for $44

With these kind of prices it's pretty easy to beat the big bux you'd pay
for one of those zoomie aftermarket anodized things. You could even get
higher volume by running 2 of them!