P 300 active exhaust

[Lowrider]

Is the exhaust valve open or shut when the arm is out on the exhaust activated valve? You can’t see the exhaust flap on the P300.The light on the exhaust button is lighting but the arm is staying out.
Can anybody advise me?
Does anybody else have P 300 on the forum?

 

[Anonymous]

Without pressure the valve stay open, if you disconnect the vacuum line the exhaust will remain in "noisy" mode.
But it depends on MY, on the latest restyling (new headlight and digital cluster) probably you don't have the vacuum line at all, probably replaced by an electronic switch.