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exhaust valve control

Posted: Sun Apr 20, 2008 10:58 pm
by wabtheking
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

my engine is a 4.2 abz in a coupe quattro, looking to mount the boxes just infront of the rear wheels for a nice side exit 8)

cheers
will