What dump valve

[Youngy]

As above what dump valve is the proper one and what is better for my car I don't care about the noise coz Iv already got the second one fitted and it's really noisy 

[Scoobyghost]

What effect are you hoping to achieve?

[mattiekane]

Top one is a recirculating dump valve

Bottom is a atmospheric dump valve.

May I ask as to why you would be fitted a second? Or have I grasp the wrong end of the stick?

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[Youngy]

Wrong end of the stick I think coz I only want one and I'm not after any effect really I just thought an after market one would be better than the original one that's all 

[mattiekane]

Unless the original one is leaking then I can't really see a benefit myself, the top one of your pictures would fit(need the Subaru adapter for the intercooler fitment) the bottom one would fit with a blank on the return pipe and would give you the tsshhhh sound

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[Scoobyghost]

Oem recirc valves are very good. If you're not after a woosh then stick to standard.

[stants]

Top one is for v3/4 cars with the recirculation valve in the elbow the pipework.

Bottom one looks like an earlierv1/2 type if yours is a v5/6 then neither will fit properly

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[Youngy]

Mine is a v4 but with a fmic so Iv made a couple of pipes up and stuck the oe one back in and eject a difference it has made coz there is hardly any lag and there is no spluttering or hesitation so im sticking with the oe one for now