I've noticed the dramatic change in sound from my HKS SSQV with the increase of boost. I went from stock 6.5 psi, to 12psi, and the sound is much more percussive and sudden.
The SSQV is much better quality, and the HKS name is more impressive.
I wouldn't recommend the kit with the HKS SSQV on the IC pipe.. the pipe is too small in diameter, and if you were ever planning on upgrading your IC, and getting larger pipes.. you would need to break it off, and purchase a flange.

Oh well.... my bov rocks anyway.
I would trade some one for a Racing Type 2 valve any day though.



