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Old 07-26-2010, 03:39 PM   #226
TommySWRX
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Quote:
Originally Posted by Byzantium View Post
Disagree.

Ever been to a car meet when a ricer drives by and sounds off his valve? It's usually the more knowledgeable people that mock them.

It IS a mod that is done for purely for attention at the small expense of some performance after all.
So you're saying any mod that is purely done for attention makes you a "ricer".
If so, that includes everyone on this forum with brightly colored wheels, everyone with an aftermarket stereo system, almost all carbon fiber parts, shift knobs, body/lip kits.
Some of the most beautiful cars on this forum, even if the mods are purely functional, have rarely, if ever, seen then track. Does that make them "ricers"? No.
Doing a mod that draws more attention to your car does not a ricer make.
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Old 07-26-2010, 04:04 PM   #227
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Quote:
Originally Posted by TommySWRX View Post
So you're saying any mod that is purely done for attention makes you a "ricer".
If so, that includes everyone on this forum with brightly colored wheels, everyone with an aftermarket stereo system, almost all carbon fiber parts, shift knobs, body/lip kits.
Some of the most beautiful cars on this forum, even if the mods are purely functional, have rarely, if ever, seen then track. Does that make them "ricers"? No.
Doing a mod that draws more attention to your car does not a ricer make.
Another person who wants to make that crap comparison. Body kits are designed for aesthetics. As for the rest, stereo systems beyond simple speakers and a head unit are redundant, bright colored wheels almost never work out, and unpainted carbon fiber is gaudy, shift knobs only serve a single purpose regardless of which you get.

Dump valves are supposed to be a functional part, so there is no point at all downgrading to something worse than what came in the car in essentially every conceivable way.
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Old 07-26-2010, 07:26 PM   #228
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Quote:
Originally Posted by Byzantium View Post
Another person who wants to make that crap comparison. Body kits are designed for aesthetics. As for the rest, stereo systems beyond simple speakers and a head unit are redundant, bright colored wheels almost never work out, and unpainted carbon fiber is gaudy, shift knobs only serve a single purpose regardless of which you get.

Dump valves are supposed to be a functional part, so there is no point at all downgrading to something worse than what came in the car in essentially every conceivable way.
Bright colored wheels almost never work out? Gold is a brightly colored wheel from the factory. Its made that way to get attention. But I guess the designers at Subaru are ricers too.
Unpainted carbon fiber is guady? Why? Because you say so?
Shift knob don't serve any purpose. People buy them because they don't like the look of the factory one or because they want people to see it and say "ooooooooohhhh aaaaahhh". But that doesn't make them a ricer. They just want to stand out. AKA- Get attention.
For most people, I repeat, for MOST PEOPLE, EVERYTHING they do to their car, functional or not, is too make their car look better and get attention. Even a functional piece has certain "look" that the owner is after. The exception would be a strictly track car or maybe a weekend autocrosser, which again is not MOST PEOPLE.
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Old 07-28-2010, 09:10 PM   #229
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Quote:
Originally Posted by Davenow View Post
He basically said ALL compressor surge is nothing more than an unpleasent sound.
dave while i recognize that i am noob to this having just bought my first subie, even i would not be so ill-informed as to say allcompressor surge is nothing more than an unpleasant sound....

since people seem to be picking at straws with this one i think it more appropriate to say all compressor surge within our feasible reality of use is nothing more than an unpleasant sound.

forgive me if I, the noob, stepped out of line just my two cents

Griff
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Old 07-28-2010, 10:22 PM   #230
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Default I think that a BOV just leaves the engine in a state of chaos

Some people do like the sound and they like the attention it attracts till the police hear it. Thats when you run into some issues. Also its my understanding that the Subaru computer attempts to correct for the engine running to rich or for running to lean. When the turbo is creating boost the car compensates for the change in the fuel air ratio. the ratio does not vary drastically between shifts with a BPV because it circulate back to the turbo keeping it spooled. When you shift at higher RPM with a BOV the turbo needs to be re-spooled every time also changing the fuel air ratio for a second witch makes the computer change how much fuel comes into the engine. This means every time you shift and hear that "awesome" shhhh sound the computer tries to compensate witch will eventual put your engine out of tune from my understanding. Not to mention the loss of boost between shifts resulting in a loss of power. Some people just tell you to power shift to compensate for the BOV but if you have a WRX the tranny can not handle the stress and its not worth destroying it just so you can maintain the boost as well as the "awesome" shhh sound.

please correct me if i am wrong on any of this because I am not an expert on the matter. This is just my understanding on a BOV vs BPV.

-Ben
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Old 07-29-2010, 01:04 AM   #231
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Great and useful FAQ!
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Old 08-10-2010, 08:25 PM   #232
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good post
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Old 08-10-2010, 08:29 PM   #233
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Quote:
Originally Posted by immortalduffman View Post
Some people do like the sound and they like the attention it attracts till the police hear it. Thats when you run into some issues. Also its my understanding that the Subaru computer attempts to correct for the engine running to rich or for running to lean. When the turbo is creating boost the car compensates for the change in the fuel air ratio. the ratio does not vary drastically between shifts with a BPV because it circulate back to the turbo keeping it spooled. When you shift at higher RPM with a BOV the turbo needs to be re-spooled every time also changing the fuel air ratio for a second witch makes the computer change how much fuel comes into the engine. This means every time you shift and hear that "awesome" shhhh sound the computer tries to compensate witch will eventual put your engine out of tune from my understanding. Not to mention the loss of boost between shifts resulting in a loss of power. Some people just tell you to power shift to compensate for the BOV but if you have a WRX the tranny can not handle the stress and its not worth destroying it just so you can maintain the boost as well as the "awesome" shhh sound.

please correct me if i am wrong on any of this because I am not an expert on the matter. This is just my understanding on a BOV vs BPV.

-Ben
Your understanding is so skewed that I stopped reading part way through.

Okay, now I decided to stop and read the rest of it. Yeah naaaa.
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Old 08-10-2010, 09:48 PM   #234
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Quote:
Originally Posted by immortalduffman View Post
Some people do like the sound and they like the attention it attracts till the police hear it. Thats when you run into some issues. Also its my understanding that the Subaru computer attempts to correct for the engine running to rich or for running to lean. When the turbo is creating boost the car compensates for the change in the fuel air ratio. the ratio does not vary drastically between shifts with a BPV because it circulate back to the turbo keeping it spooled. When you shift at higher RPM with a BOV the turbo needs to be re-spooled every time also changing the fuel air ratio for a second witch makes the computer change how much fuel comes into the engine. This means every time you shift and hear that "awesome" shhhh sound the computer tries to compensate witch will eventual put your engine out of tune from my understanding. Not to mention the loss of boost between shifts resulting in a loss of power. Some people just tell you to power shift to compensate for the BOV but if you have a WRX the tranny can not handle the stress and its not worth destroying it just so you can maintain the boost as well as the "awesome" shhh sound.

please correct me if i am wrong on any of this because I am not an expert on the matter. This is just my understanding on a BOV vs BPV.

-Ben
I think I stopped reading after this...
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Old 08-18-2010, 02:34 PM   #235
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bovs are good
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Old 08-22-2010, 03:30 AM   #236
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Quote:
Originally Posted by Xigent View Post
There have been 2 reasons I've been speaking against BOVs for the past few years.

1. Many have issues with leaking boost.

2. Loud BOVs are gaudy. People who have them (IE TXS RFLs, Greddy RS) are just after attention. Unfortunately they don't real that it's NEGATIVE attention that they are getting. While they think they are cool, everyone is rolling their eyes at them knowing they are just another ricer.
Yes! Whenever I see a ricer, normally a civic, with a huge, loud, can exhaust, I think, "that's ALL he has." Not to mention I don't really fear civics anyway. I've seen too many factory N/A cars in a parking lot with a front mount and think "oh this guy took the time and money to boost his car. I'll wait around to see him drive away or chat or something like that." And when he leaves his car sounds like a pourly running top fuel dragster so I know he probably just took a weekend to throw on some turbo he got from a friend, plumbed it for an intercooler, threw on a BOV and now looks for any red light he can find.

Did I mention good FAQ Dave???
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Old 08-27-2010, 01:03 PM   #237
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ok my 04 wrx is compleetly stock ceopt for some wheels and my carbon gastank lid. my Question is . on the stock BPV, if i remove and plug up the recurculation hose. will my bpv gime me that ever so cool wooooshy sound? and the 2nd part of my 2 parter is if i get a BOV and its fully "pppssstt" into the air under my hood is there any side affect to plugging up my recerc. hose?
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Old 08-28-2010, 04:41 AM   #238
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Quote:
Originally Posted by getdirty View Post
ok my 04 wrx is compleetly stock ceopt for some wheels and my carbon gastank lid. my Question is . on the stock BPV, if i remove and plug up the recurculation hose. will my bpv gime me that ever so cool wooooshy sound? and the 2nd part of my 2 parter is if i get a BOV and its fully "pppssstt" into the air under my hood is there any side affect to plugging up my recerc. hose?

Please be aware that a BPV/BOV is there for a reason other than to make noise, it is one of several parts which regulate your forced induction system.

1.) If you want the sound, buy the part to get it they are not terribly expensive. It might work in your suggested application, but it's not designed for it.

2.) Two questions for a question: Do you ever want an intake leak allowing for non-metered air? Do you have any need for recirculation plumbing if you have nothing to recirculate?

You are aware that it is possible to turn your car into a 3000 pound lawn ornament by messing with this system, correct?

I would strongly recommend some more learning.
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Old 08-28-2010, 09:11 PM   #239
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Old 08-29-2010, 02:05 AM   #240
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i mean iv got a fmic a turbo xs one. and a m,atching BOV. i was just trying to settel something with a buddie that its bad to do that. but when i do put the FMIC and bov on will it erase my recerc. hose or do i just plug it up?
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Old 08-29-2010, 09:46 AM   #241
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Depends on the valve. A 100% atmospheric will require you to block the stock recirculation hose. A 50/50 valve uses the recirculation hose. No offense but if you have to ask this I doubt you really need a FMIC.
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Old 08-29-2010, 08:03 PM   #242
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Quote:
Originally Posted by quazimoto View Post
Depends on the valve. A 100% atmospheric will require you to block the stock recirculation hose. A 50/50 valve uses the recirculation hose. No offense but if you have to ask this I doubt you really need a FMIC.
+1

Or it's time to go visit your local tuning authority, they can get you squared.
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Old 08-30-2010, 01:28 AM   #243
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Originally Posted by getdirty View Post
i mean iv got a fmic a turbo xs one. and a m,atching BOV. i was just trying to settel something with a buddie that its bad to do that. but when i do put the FMIC and bov on will it erase my recerc. hose or do i just plug it up?
If you don't even know what to do with the parts you have, you really are attempting something beyond your level of understanding. Modding your car beyond your own personal comprehension on how something works and what it affects can lead to costly mistakes, an under performing setup, and wasted money on parts that you shouldn't have. My recommendation is the same as Ron's (quazimoto). I suggest selling the intercooler kit and using the money elsewhere. I will tell you now, that intercooler was probably the most foolish purchase you could have made for your car. You're $8-15k in mods from needing it.
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Old 09-03-2010, 07:27 PM   #244
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Good write up, very helpful
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Old 09-03-2010, 09:50 PM   #245
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just wanna say this was great info for a subie noob like myself. much different than a 2g dsm where the stock bov WONT hold more than 14-15 psi. you gotta switch it up on them. but now i will be happy to stick with the stock valve and put the money to more useful mods! thanks to all who contributed the great info!
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Old 09-10-2010, 12:44 AM   #246
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Originally Posted by Byzantium View Post
If you don't even know what to do with the parts you have, you really are attempting something beyond your level of understanding. Modding your car beyond your own personal comprehension on how something works and what it affects can lead to costly mistakes, an under performing setup, and wasted money on parts that you shouldn't have. My recommendation is the same as Ron's (quazimoto). I suggest selling the intercooler kit and using the money elsewhere. I will tell you now, that intercooler was probably the most foolish purchase you could have made for your car. You're $8-15k in mods from needing it.
But only a tune away from benefiting from it
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Old 09-10-2010, 12:45 AM   #247
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Originally Posted by cptblacksparrow View Post
just wanna say this was great info for a subie noob like myself. much different than a 2g dsm where the stock bov WONT hold more than 14-15 psi. you gotta switch it up on them. but now i will be happy to stick with the stock valve and put the money to more useful mods! thanks to all who contributed the great info!
The mazdaspeed miata factory valve leaks at 7psi. Literally you cant make more than 8-9 PSI with it, It simply wont allow that much boost to build, it leaks that badly.
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Old 09-12-2010, 04:52 PM   #248
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thanks for the write up
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Old 09-14-2010, 06:42 PM   #249
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Ok, I read the first page, and I got a question.

I do not know for sure how my HKS SSQV BOV is set up, it was on the car when I bought it, granted, I didn't know much about EM so I just figured it wouldn't do any harm. Now, I'd like to adjust it, but have no idea how...

This something I can google to adjust? Or should I just take it out since I'm on stock turbo boosting around 16psi...
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Old 09-18-2010, 01:11 PM   #250
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Very nice write up thanks!
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