WHITEUK Posted July 22, 2006 Posted July 22, 2006 Is there any reason why a dump valve should loose its noise? I have an hks super sqv and noticed tonight it didnt seem as loud as usual,it has the purple bit inside which meant nothing to me when i bought it but have seen inserts for sale since giving a different sound.The purple one for high pitched. It has sounded the same since it was fitted about 1 year but tonight it seemed to sound different,lower pitched and shorter blasts. ive also noticed that the valve can turn.Never noticed it turning when i fitted it,it seemed prety solid so i wonder if there is a seal gone or something although i cant feel any air escaping when revving eng. has anyone any ideas? does anyone elses turn? [8-)]
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