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BOV vs. Diverter valve

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Old 08-05-2010, 12:27 PM
  #16  
Keithr726
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I have the EVO motorsports unit and also bought the Forge Spring kit, works great, still makes fun sounds and no richness.
Old 08-05-2010, 01:36 PM
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PixelGrinder
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Does anyone have advice on which diverter valves are louder than stock? I read the forge and Evo are literally silent, any differing opinions?
Old 08-05-2010, 01:59 PM
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Adam Poland
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LR's billet bypass valve makes a nice whippling sound if you have a MAF kit. If you still have the stock rubber j-boot/afm setup, it's silent. And i think pretty much every other diverter valve is silent with it as well, unless you go to an atmospheric blow off.
Old 08-05-2010, 02:01 PM
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How did I wind up up on the "faster and furiouser" board? We are talking about BOV sounds? Seriously?

+1 for Forge, mine has worked great for the last 6 years or so.
Old 08-05-2010, 02:09 PM
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Paulyy
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'gotta look cool'

adam will like this one,

- Block the bov, and put a 17cm long 2.5" pipe with mesh on the end (to the turbo).
This gives the classic loud as all f**k high pitched, screaming, perfectly defined 'dose'... It's the muztek classic, as i like to call it.

Click here to hear it!
Old 08-05-2010, 05:47 PM
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Supernotch93
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Originally Posted by 86 924S Driver
I am picking up a brand new FPR and I will picking up a new diverter valve (aftermarket) and hopefully I will expierence full boost for the first time.
If you spend the money get the Lindsey product, they have put some good time and effort into making it last. good choice, let us know how it comes out.



By the way, I would be surprised if your rich condition were being caused by bad the diverter valve, so if your main goal is still fixing that, you can probably do okay on the bad valve for a while. If anyone has experience to the contrary, though, please chime in!
By the AFR gauge, it defiantly makes it run rich, had the same problem switched out and all was good.
Old 08-05-2010, 07:31 PM
  #22  
pontifex4
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Originally Posted by Supernotch93
By the AFR gauge, it defiantly makes it run rich, had the same problem switched out and all was good.
Okay, that is good to know.
Old 08-05-2010, 07:32 PM
  #23  
supes6
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The only thing with the billet aftermarket units is that you have to service them regularly.. i.e. take it apart and clean/lube the piston. I think they recommend doing it once a year or so. The Bosch 710n is an updated version of the stock unit and a lot of Audi guys are using it.. I have one on my A4. It's good for 25psi and is low maintenance. My original one was 10 years old and still working fine.. Also I saw a web page where some guy did a test on all of the BPVs as far as response time and the units with rubber diaphrams (like the 710n) all came out on top.
Old 08-06-2010, 11:02 AM
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DivineE
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Originally Posted by sh944
How did I wind up up on the "faster and furiouser" board? We are talking about BOV sounds? Seriously?

+1 for Forge, mine has worked great for the last 6 years or so.
Ohh come on don't tell me it doesn't make you smile when you hear a nice flutter Prior to the fast and furious era spluttering, flaming anti-lag backfires and the chattering of DV valves were always my favourite turbo sounds. Watch from about 59secs in:

http://www.youtube.com/watch?v=Q8AzQ...eature=related
Old 08-06-2010, 11:41 AM
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JohnKoaWood
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Why not just upgrade to a stand alone, and install a true BOV, dump the AFM, and pick up nice modern functions along the way!
Old 08-06-2010, 01:01 PM
  #26  
86 951 Driver
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Are there ever any specials that they run on these Diverter valves ever?
Old 08-06-2010, 02:06 PM
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Paulyy
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Originally Posted by JohnKoaWood
Why not just upgrade to a stand alone, and install a true BOV, dump the AFM, and pick up nice modern functions along the way!
i agree! nothings better then having all the air you want in the turbo.
Old 08-06-2010, 02:16 PM
  #28  
ehall
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Originally Posted by 86 924S Driver
Are there ever any specials that they run on these Diverter valves ever?
Not really.

Cheap+951= permanent garage queen.

You've been warned.
Old 08-06-2010, 02:52 PM
  #29  
Supernotch93
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Originally Posted by JohnKoaWood
Why not just upgrade to a stand alone, and install a true BOV, dump the AFM, and pick up nice modern functions along the way!
Originally Posted by Paulyy
i agree! nothings better then having all the air you want in the turbo.
Thats what I did total control now!! Life is so much easier.. Don't have to worry about "can my chip do what I want to" or "Who makes this product and how much will it cost and take to add it to my stock ECU/KLR for minimal control".

However after saying that it is not for the technically challenged, you have to know what your doing or you could cause a lot of costly damage.
Old 08-06-2010, 04:23 PM
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DivineE
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So glad I bought a car with stand alone and knock control already installed and set up! Always wanted it, never had the technical knowledge. Now I have the head start I needed to catch up and learn slowly.


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