OK, was driving today, and notcied my BOV was making a funny sound. I am running about 12 lbs of boost, and when on the primary and shift, I get the normal pshhhht. But when I am on the second turbo it sounds different, more like a short WHoooop. My only mods are a ported air box with K&N filter, and a downpipe. Is this normal? Am I overloading the stock BOV? Does it just sound different because of the added boost? Does it sound different on the high rpms because of the added air intake? Anyone know?

Thanks,

LJ

BTW. I just ported the airbox yesterday.

 

It is probably just because of the airbox not muffling the sound now that its ported.