i have the back boxes from a v8 s4 which have the vacume valve, does this simply operate on the engine vacume or is it like the dual length intake manfold which have a accumalator and a solenoid valve to opperate after 4000rpm?i know the valve does what ever its suppose to do above and below 1700rpm...
what if its intermittant whatever the rev's?
no strange noises,
done the bleed thing,
just all of a sudden you loose power steering,
then as strange as it goes away, it comes back?????