I know this has been talked about before but never saw any really good answer. What are people doing to quite down the Vortechs BPV. I know there is a filter i can buy, but i heard that doesn't do a lot. Any info is appreciated.

 

Is it just loud or are you hearing a whistle?

If its just loud, either live with it or point it towards the engine / center of the vehicle. the engine will muffle the sound somewhat. you can also put a filter over the opening, but you may run into clearance issues with your sway bar (if the BPV is pointed inward) or the engine liners & belly pan (if BPV is pointed outward).

If you're hearing a high-pitched whistle, the filter may also work. alternatively, i found that a thin strip of cloth was enough to get the noise to go away. you just want to change the direction of flow out of the BPV slightly so it doesn't whistle so loud. do not put anything directly over the opening - make sure air can still escape the BPV freely! Also, if you're still under warranty and can deal with some downtime, you should consider sending the BPV to vortech for inspection / rebuild. you don't want to put a bandaid over the symptom of a larger problem with the BPV.

this topic has been covered a bunch on my350z.com. you'll get better results if you search over there.

 

http://www.superchargersonline.com/p...ber=V8H040-175

 

The BPV is brand new and doesnt make a whistle at all.. its loud when not under load (psssshhhhh).. just want to quite it down some as the power is AMAZING!

I dont need it to be completely silent, but tone it down by half would be nice.. ill consider poiting it up towards the engine as i believe its pointed strait back now.

 

Roll the windows up!

 

u going to have to live with it. the filter will help but not much. mine sounds like a jet engine and shakes my garage when I start her up in the mornings, lol. GL

 

You can add a hose to it and route it down under the car.

 

^ hose works too...i think tylerxfire did that and added a filter to the end. btw, the bpv can only be pointed towards the wheel or towards the engine.

the loud wooooosh sound is perfectly normal. you'll get used to it and like it soon enough the remedies i mentioned are if the BPV is making an unusual noise.

 

run a hose to inside the car and point at passengers face...

 

Haaaaaaaaaaaaaahahahah... ROFL!!

 

if you have a CAI setup, you can just pipe the air back in, after the filter and before the supercharger.

 

Yeah i think i saw some people mention that.. so is it safe to use rubber tubing to push/dump to the CAI?

I read somewhere that could cause some issues?