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Old 12-28-2006, 02:06 AM   #76
i_c_the_light
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For teh aftArf1r3 p0p!!!
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Old 12-28-2006, 07:14 AM   #77
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Quote:
Originally Posted by JMK508 View Post
WOW i wonder what it will look like. Anyway guys.......what is the reason everyone wants a blowoff valve. pssssssssssssssssssschaaaaaaaa. That's all it does. Sure it sounds cool for like the first 10 seconds and then it makes your car run like 1984 Geo Metro. Not good. So why does everyone feel the need to throw one on a stock car. WHY
I reallllyy like that sound =X...
And i think it's worth the money...
The only problem is as said....The confusion with the fuel system =\...Darn...
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Old 01-07-2007, 01:08 AM   #78
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Quote:
My thanks to Dan of Mach V Motorsports for writing an excellent BOV article that provided a lot of the information contained within this FAQ. He also provided additional information that was helpful in the formulation of this FAQ.
The link to "excellent BOV article" is dead.
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Old 01-07-2007, 01:22 AM   #79
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Quote:
Originally Posted by Foxy View Post
The link to "excellent BOV article" is dead.
It's not now thanks to the web archive. Thanks for letting me know.
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Old 01-07-2007, 03:27 AM   #80
WRX Josh
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Awesome thread. I learned a lot. I used to be one of the people that figured a BOV would be a good mod for not only sound, but performance. I actually did some searching on this site and learned about the BOVs causing cars to run rich, but this thread really put it all out on the table.

I'm a noob btw and I already love this site.
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Old 02-28-2007, 02:43 AM   #81
ED_04WRX
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I had the GFB hybrid set to 50/50, it was nice but I rather have a good running car. So the stock one is back on now. Besides I now have a cat back exhaust so I couldn't even hear the BOV.

Thanks for the great thread, it was very helpful.
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Old 02-28-2007, 03:44 AM   #82
BugeyedMonster
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I really hate to dredge up an old thread like this, but i figure it's less likely to invite flame-age than opening a new thread (ESPECIALLY a BOV thread) would.

Am I understanding the above issue with the turbosmart dual-port correctly? It sounds like it vents as much as it safely can to atmos, and then recircs the rest of it....Is this anything like the Perrin BOV or others that allow you to adjust the amt of recirc vs. vented pressure? I adore that sound, but running rich FTL....


Quote:
Originally Posted by HoratioCaine View Post
They make and sell a metric ton of throttle body spacers for fuel injected vehicles that do not one bit of good at all
As a side note, thanks for this. I've been wondering for some time just what in the hell these things help with. And now I know. Hooray for knowledgeable ppls.
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Old 03-04-2007, 09:49 PM   #83
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Just curious, what is the .16 cent mod to make it louder?
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Old 03-04-2007, 09:52 PM   #84
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Quote:
Originally Posted by jordanb1313 View Post
Just curious, what is the .16 cent mod to make it louder?
It`s called "Crushing" the bpv...it pretty much tightens the spring to hold more boost and has a louder whoosh sound.
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Old 03-04-2007, 10:01 PM   #85
Greekti
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very helpful thank you
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Old 03-04-2007, 10:06 PM   #86
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Is it worth doing?
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Old 03-04-2007, 10:08 PM   #87
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^^Yes, if you are pushing some high boost numbers and want to keep your car running smoothly and stealthy for the cheapest price.

If you are running stock or a little above stock boost, the mod is not necessary.
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Old 03-05-2007, 12:34 AM   #88
scubiesnacks19
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is there an adjustment bolt on BOVs to adjust the "sensitivity"?
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Old 03-05-2007, 11:47 AM   #89
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Quote:
Originally Posted by scubiesnacks19 View Post
is there an adjustment bolt on BOVs to adjust the "sensitivity"?
Yes, some have a bolt and some others like the Turbosmart one can be hand-tightened to stiffen the spring to hold more boost.
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Old 03-05-2007, 12:03 PM   #90
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It's probably been said before but I'm just here to reinforce it, first mod I did was remove the stock snorkel, heard the BPV slightly better, then I installed a drop in K&N Panel and heard it ever so slightly more, then this past weekend I just installed a used K&N Typhoon and yes, you can def. hear everything better. That should fullfill your need of Phooosh sounds. Frankly I'm glad I didn't get a BOV cuz even my gf was like a BOV would get annoying after a while as the BPV was more then enough.

Although I've always wondered if the Forge BPV was louder then stock, I emailed Forge about that but never got a response. If someone could just let me, I might get one.

Last edited by Knightmare69; 03-05-2007 at 04:51 PM.
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Old 03-05-2007, 04:12 PM   #91
jordanb1313
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Is there a tutorial on how to do that?
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Old 03-05-2007, 04:51 PM   #92
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Quote:
Originally Posted by jordanb1313 View Post
Is there a tutorial on how to do that?
Do what?
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Old 03-05-2007, 04:53 PM   #93
Force
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^^I think he wants to know how to crush the stock bpv
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Old 03-05-2007, 04:57 PM   #94
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No actually to remove the stock snorkle and stuff. I was reading on taking the intake silencer out and stuff. is that all the same?
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Old 03-05-2007, 05:02 PM   #95
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Quote:
Originally Posted by jordanb1313 View Post
No actually to remove the stock snorkle and stuff. I was reading on taking the intake silencer out and stuff. is that all the same?

Yes, the intake silencer is called the 'snorkel' or 'snorkus'. It's pretty straightforward, try searching scoobymods for the write-up.

It took me about 15 minutes to do...the hardest part is pulling that sucker out from underneath the car without cutting your fingers up against the fender

But really though....it's about a Level 1 out of 10 difficulty job.
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Old 03-05-2007, 05:09 PM   #96
Knightmare69
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^^Yup, just unscrew the fender lining on the passenger side and peel it back, you'll see a giant odd shaped looking thing.

On the inside of the engine bay where the intake box is, you'll see a bolt that holds the snorkel, I think there may be another bolt or 2 in the fender area but I don't remember as this was the first thing I did when I got my car, had my gf shaking her head at me asking "can't you at least wait the year till your warranty expires before you start ripping your car apart?"

I just looked at her and she was like "oh screw it, I forgot for a moment I'm talking to a total car modding idiot"
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Old 03-20-2007, 07:47 PM   #97
Hairboy123
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Default probably a stupid question but...

I installed the GReddy blow off valve (a hybrid) because I had read that the stock BOV starts leaking after 14psi and with the Cobb AP reflash I'm boosting about 18psi. I believe the BOV is recirculating the air so as not to mess up the sensor reading. but I was noticing that when pushing the car that inbetween shifts the turbo looses pressure too quickly and it takes a sec. to boost again. I can't hear the BOV, presumably because I'm not venting to the atmosphere as well as I probably woundn't be able to hear it over the 3" exaust anyways.

2 questions:

Is the turbo not staying in boost inbetween gears an issue of the blow off valve setting or is there some other cause?

Is there a way to tell if the BOV is recirculating all the air or is doing the 50/50 thing? (since one of my friends put it on, I don't recal the initial configuration)

Take it easy on me, I know I'm a newbe and new to working on my car.
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Old 03-21-2007, 09:18 AM   #98
patty AT forge
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Quote:
Originally Posted by Knightmare69 View Post
It's probably been said before but I'm just here to reinforce it, first mod I did was remove the stock snorkel, heard the BPV slightly better, then I installed a drop in K&N Panel and heard it ever so slightly more, then this past weekend I just installed a used K&N Typhoon and yes, you can def. hear everything better. That should fullfill your need of Phooosh sounds. Frankly I'm glad I didn't get a BOV cuz even my gf was like a BOV would get annoying after a while as the BPV was more then enough.

Although I've always wondered if the Forge BPV was louder then stock, I emailed Forge about that but never got a response. If someone could just let me, I might get one.
What email did you send it to, do you remember?

Anyways, the BPV will be a slight bit louder than stock but not by much. The tone of the sound and duration can change depending on what spring you use in the valve.
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Old 04-02-2007, 02:21 AM   #99
i_c_the_light
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I'm throwing one on my GT and having run one before, I have experienced no issues at all as long as the spring is tightened correctly and you don't mind the odd fireball.

Oh and the stock JDM valves DO LEAK.
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Old 07-25-2007, 08:22 PM   #100
porTURBOer
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Default thank you

Speaking from a true soobie noobie, thank you all for your information in this thread!

About an hour ago (when i started to read this thread), i was BOV/BPV-stupid. Now I know what NOT to do to my WRX.

Thanks again!
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