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i would like to get the waste gate chattering sound on my golf, like the scoobys and evos have, i dont want a crappy dumpvalve wooosssshhh thow, any one got any info that could help me ???? cheers!
I believe that a diaphram dv will give you a similar sound unlike the P-Tsssssssssshh sound common with piston dv's.

Although the diaphrams tend to split after a while especially when runner high boost hence the reason for piston dv's
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