Tial BOVs are built solid to hold boost, just a woosh of air when you let off, all business
Both their Q and 50mm are stellarI actually really like the Tial ones also. Do you have a recommendation to which one specifically? Are they VTA?
Personally I don't like the HKS squeal :lol:out of all the ones ive heard the HKS is the best sounding , Have a listen here
Evo X RS With 491HP 681Nm Torque HKS SSQV IV BOV Sound & Walk Around. - YouTube
Dump Valve HKS SSQV 3 4 5 Racing Blow off sound - YouTube
I would run the stock one, but i thought it wasn't good past 22 psi? if it's good to like 25ish i would deff run it.21 turbo cars later and I think I am ready to give you my opinion..... If you car is holding boost fine then don't touch it. If you just want something louder then I might understand but always keep in mind that just because is louder doesn't mean is best.
You want a BOV that acts fast (opens and closes), and doesn't leak. As far is the sounds, well, I prefer mine quiet but unfortunately my stock STI BOV is loud because of the amount off boost I am running.
With all of that being said, I can't justify spending the money on a BOV unless what I said (leaks boost too early)..my .50c