brake booster check valve

[Matt Sale]

> 
> >  <<<
> >  >There is a check valve in the brake booster to prevent pressure from entering 
> >  the booster on many cars.  Under boost >you loose all effects of   >>>
> >  
> >  On the plus side these valves are just inexpensive plastic valves available 

Supposedly, the new Mustangs have a system called "hydroboost" that
takes the power-brake boost from the power-steering pump instead of
engine vacuum.  I've not investigated it, but saw mention of it in
a Mustang magazine.

-- 
Matthew D. Sale