Things that go "PPSSSSSSSSHHH" in the night
Things that go "PPSSSSSSSSHHH" in the night
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Discussion

plipton

Original Poster:

1,302 posts

287 months

Wednesday 10th May 2006
quotequote all
Stealth mode required....

Does anyone know of a high performance BOV that doesn't sound like a lorry putting on its brakes every time I lift off the throttle? (obviously it has to be suitable for my 3R)

I'd prefer a recirculating BOV but not sure how (or where) to plumb it into the intake loop. Anything quieter or with a different sound would be OK. The ones on Audi TTs sound quite sexy but not sure they are suitable.

Ta

Plipton

mgbond

6,749 posts

261 months

Wednesday 10th May 2006
quotequote all
How about the one that Veagan Tune sell.

My Faulks BOV is quiet, I can't hear it over the rush of air going into the intakes.

Bondy

plipton

Original Poster:

1,302 posts

287 months

Wednesday 10th May 2006
quotequote all
I moved my filters to the intercooler duct. I prefer the sound of the engine to the whooshing noises. Now it's just the BOV to replace, er, followed by a new noisy zorst

gotapex

229 posts

267 months

Thursday 11th May 2006
quotequote all
Pretty much any recirculating valve will be quieter than a blowoff. I had the HKS Racing Bypass Valve installed on mine.

www.hksusa.com/products/?id=761

Here's a picture of it, including how it's plumbed back into the intake:

www.nobleforums.com/showthread.php?t=181

V6GTO

11,579 posts

271 months

Thursday 11th May 2006
quotequote all
Minor point for those that don't know...gotapex here is ONYX400 on Nobleforums.

Really Gabe...if I didn't know better I'd think you were trying to mess with peoples minds

Martin.

plipton

Original Poster:

1,302 posts

287 months

Thursday 11th May 2006
quotequote all
gotapex said:
Pretty much any recirculating valve will be quieter than a blowoff. I had the HKS Racing Bypass Valve installed on mine.

www.hksusa.com/products/?id=761

Here's a picture of it, including how it's plumbed back into the intake:

www.nobleforums.com/showthread.php?t=181


Ta. I can't quite see where the recirculating valve is plumbed back into the intake from thiose pix but I'm sure it isn't a big job

JimNoble

410 posts

311 months

Thursday 11th May 2006
quotequote all
plipton said:
gotapex said:

Here's a picture of it, including how it's plumbed back into the intake:
www.nobleforums.com/showthread.php?t=181

Ta. I can't quite see where the recirculating valve is plumbed back into the intake from thiose pix but I'm sure it isn't a big job


In OnyxM400's 2nd picture, you can see the rubber hose going from the BOV to the intake pipe just below.

Hmm, doesn't that mean it can only stop one turbo from stalling? (The front one by the looks of it). Given that the recirc air will be warmer, wouldn't it be better to send it to the rear turbo (given the propensity for the front one to cook)?

Jim

gotapex

229 posts

267 months

Thursday 11th May 2006
quotequote all
JimNoble said:
plipton said:
gotapex said:

Here's a picture of it, including how it's plumbed back into the intake:
www.nobleforums.com/showthread.php?t=181

Ta. I can't quite see where the recirculating valve is plumbed back into the intake from thiose pix but I'm sure it isn't a big job


In OnyxM400's 2nd picture, you can see the rubber hose going from the BOV to the intake pipe just below.

Hmm, doesn't that mean it can only stop one turbo from stalling? (The front one by the looks of it). Given that the recirc air will be warmer, wouldn't it be better to send it to the rear turbo (given the propensity for the front one to cook)?

Jim


Technically speaking, yes. Practically speaking, there's no difference between recirculating and free to air other than sound on a speed density system like our cars use.

V6GTO

11,579 posts

271 months

Thursday 11th May 2006
quotequote all
Gabe...love the look of your red inlet manifold. How long before it's running and pushing the car?

Martin.