Will the sound gradually change, like will the spring soften up?

Thanks

 

If you buy a cheap nasty one it will.

 

I brought a Baileys dump valve and the sounds not as i thought it would be. Thought it might change once run in.

Thanks

 

Those have a pretty poor press on here....

I stuck the stiffest spring Forge do into mine and it barely makes a peep.

MD321H so it doesn't really need one now....

dunx

 

The car seems to be running fine, just not sure on the sound. Sounds surely can't vary to much dump valve to dump valve though?

Thanks

 

every dump valve sounds different (apart from the same model)... the sound depends on the bov's casting and what restrictions are placed around the air release areas. take HKS they have the signature chirp but that's produced only by the three fin design insert that makes the air flow around it in a certain way.

my experience with Baileys isn't a good one, they tend to have weak springs and leak while cruising on the motor way. you can buy a harder spring to put inside, sound wise there just simple cast slits so just produce a simple whoosh sound.

 

hks or blitz there the only one's to have i have the blitz supersound and it gives anice wooosh and is good and strong

 

as already ready said, hks,blitz or turbosmart are most commonly used,

ma mate had a lot of probs with his blob until we changed the baileys for a turbosmart, never had a prob since on his and i have the hks on mine and never had any issues either