I am thinking of either a turbo xs hybrid bov (it does part open atmosphere and part rec) a Racing Bypass Valve Type 25 full rec or a hks ssq with rec kit. What would have a better sound and where can I get a adapter for it to go where the bosch goes ? I think it is a 1" or 1 1/2" hose.

 

watching........ i didn't even know you could put a blow off valve on the s/c since it was belt driven i didnt think it would have any effect/ or sound

 

i have a hyperboost GX and its just a bpv and when i shift after 3k rpms you can hear the WOOSH sound from inside the car, it will be up for sale when i install the turbo

 

So it's vented back into the intake ? also do you have the stock airbox

 

yea stock air box but then i got the mmw intake and it gets louder

 

My BPV is still recirc but it makes audible noise. Turbo XS BPV, direct replacement for our stock Bosch.

 

Can you hear it when shifting around 3K ? I was thinking of that but I realy would like to see and hear that new hybrid they have. Seems to be best of both worlds.

06SuperWhite_SoCal_tC any chance of a sound clip ?

 

I have the Turbosmart Kompact Series Dual Port BOV and love it.
Model: TS FG-BOV-KTDP25
http://www.slowboyracing.com/estore/...id=5140&page=1





Other options are the Go Fast Bits Hybrid
http://www.stealthwork.com/audivw-hy...lve-p-314.html





Agency Power has their version of the hybrid Model: AP-18T-150
http://www.vividracing.com/catalog/p...oducts_id/9370




As long as the BOV is designed to work with a VW/Audi 1.8t or 2.7t, it will work on the supercharger. Just replace the stock Bosch BPV with one of the above options and you'll be set. No modifications or special equipment is needed to install one.

 

....

 

Why did you go and do that now I have too many choices

 

so wait with the hybrids, does it actually sound like a bov does on a turbo engine? and it doesnt create any boost loss?

 

I don't see how it would create a boost loss. It performs just like any other BOV or BPV where a change in pressure caused by disengaging the throttle vents/recirculates the excess pressure.

It's called a hybrid because half recirculates while the rest vents to the atmosphere to give it the sound a lot of people want. It was designed for vehicles like the VW/Audi 1.8t because the air is metered before it goes thru the turbo/supercharger. If you vent everything to the atmosphere, the car has a higher chance of stalling and backfiring because the ECU tries adding the right amount of fuel for the amount of air it saw thru the MAF sensor. The hybrid BOVs allow people to make adjustments so there's enough air being recirculated so the engine doesn't stall/backfire and still get the sound.

Turbos vent pretty quick and are fairly loud. In supercharger setups, the sound will be different. Superchargers vent slowly (since it's belt driven) so the sound isn't quite as loud, but the sound lasts a lot longer. During light acceleration, you won't hear it as much, hard acceleration you will. You'll notice it the most when you downshift and let go of the accelerator. It'll make the sound almost until you stop, as long as you're in gear and are off the gas pedal. All of the hybrid BOVs I've seen only have the PSSSSHHHH sound, and on the supercharger it'll sound like an air leak.

Notice how long this IS makes the venting sound:
http://www.youtube.com/watch?v=NiSBxzWq2Cg

 

umm.. nice to know..

 

yeah i dunno how much i would really want to do it now, thats just way too long and doesnt sound that good really to me

 

It'll only sound like that if you keep it in gear when decelerating. It sounds like a normal BOV when shifting.

 

o cool

 

I would, but you wouldnt be able to hear it in a vid over my exhaust. You can hear it... but its not that loud.

 

o have that same bpv and i dont hear anything, of course my exhaust is really flippin loud 2 lol

 

I found this post from a while back and it was from a mechanic who works at go fast bits:

So is he saying that the 50/50 design would be poor for the supercharger application? I have the bosch 110 right now but I would like to upgrade to 1 of the 3 options imasono___un posted or the turbo xs bpv. I just need a push into one direction so sell me on one of them. Those who have the 50/50 give me all your pros and those who have the turbo xs do the same.

 

Yea, you have to listen for it. I drove around with it Venting aswell, but did not like it... So I stuck to Re-Circ instead. I found pennies to be a good substitute for washers... you just have to keep adjusting it taking off the BPV to get it right, but in the end. Bleh, I found it pointless.