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VXOC Astra-J/GTC › Astra-J/GTC Section › Astra-J/GTC v
Cdti dump valve

VXOC Astra-J/GTC › Astra-J/GTC Section › Astra-J/GTC v
Cdti dump valve

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Cdti dump valve
richje100 Offline
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#1
6:th-May-2014, 08:12:49
Hi guys, correct me if I'm wrong but does the cdti have a dump valve? I hear the whoosh sound when changing 1st, 2nd and 3rd gears and wondered if you could mod it to make it louder?


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Rusty2009 Offline
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#2
7:th-May-2014, 12:55:49
I must say I've not heard it on my 2.0 and TBH I don't know if they have a dump valve or not.
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JohnL Offline
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#3
7:th-May-2014, 15:17:22
They don't have a dump valve but I believe they have a recirc valve. As for making it louder not sure if you can. A cone filter might do the trick.
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mg3091 Offline
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#4
8:th-May-2014, 10:12:50
Cone filter on mine you could hear more of a sucking noise, but tbh that was about it, maybe try putting a bigger airbox to turbo pipe and a better cold air feed, should do the trick!
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#5
8:th-May-2014, 10:43:41
I tried a cone filter on my cdti and it was horrible sounded like darth vadar, took it off after 1 day

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