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06-13-2012, 06:26 PM | #501 |
Scooby Newbie
Member#: 302689
Join Date: Dec 2011
Vehicle:08 STI OBP |
Nice reply amalgrover. To sum it up, running with an aftermarket (unless you has to change ur bpv) aint a good idea. Apparently the hybrid ones are "less" harmful
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06-14-2012, 03:43 PM | #502 |
Scooby Newbie
Member#: 323209
Join Date: Jun 2012
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You said it. If you like something on your car don't be worried what anyone else thinks.
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06-28-2012, 09:55 AM | #503 |
Scooby Specialist
Member#: 56731
Join Date: Mar 2004
Chapter/Region:
MWSOC
Location: Akron, Ohio
Vehicle:2004 STi, 00 Insight 10 Volvo C30R-d 11 F150 |
Ok, so here's a question.
I'm going from MAF to speed density. Is there any benefit to going from 100% recirc to a 100% atmospheric? I would think that since the intake tube that the air is recirculated into is in vacuum (less than atmospheric pressure) there would be a higher pressure differential across the valve if I recirculate it, thus making the actual 'blowoff' even happen faster. Therefore it may even be worse to go atmospheric. But I don't know any more than that about it or if that even matters. |
07-20-2012, 03:42 PM | #504 |
Scooby Newbie
Member#: 326731
Join Date: Jul 2012
Chapter/Region:
BAIC
Location: San Jose, Ca
Vehicle:2002 Impreza WRX Silver |
"almost all leaked..."
"I was shocked at what I found. Almost all leaked." Which ones didn't leak/worked the best?
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07-20-2012, 04:00 PM | #505 |
Scooby Specialist
Member#: 228784
Join Date: Nov 2009
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2004 wrx black, stage 2+ |
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07-20-2012, 06:07 PM | #506 | |
Scooby Specialist
Member#: 183480
Join Date: Jun 2008
Chapter/Region:
South East
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Quote:
the stock metal and plastic ones leak on stock turbo setups alot of the time. this is the whole reason people swap to aftermarket or do the bpv mod on the metal ones. |
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07-24-2012, 09:58 AM | #507 |
Scooby Newbie
Member#: 206682
Join Date: Mar 2009
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2008 WRX Stg 2.5-ish OBP (R.I.P. 05' LGT OBP!) |
Quick question, it may have been covered already...I have a 2008 WRX with a Fast Motor Sports FMIC. It only supports a stock adapter. What kind of BOV should I use? I've heard people say it needs to be 100% recirulating. Is this true? I have a TurboXS RFL BOV, will this work fine if I find the correct adapter? Any help is appreciated, so let me know what you think! Thanks.
-Robert |
07-24-2012, 09:59 AM | #508 | |
Scooby Specialist
Member#: 175565
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: KCMO
Vehicle:2014 Sport Premium Satin White Pearl |
Quote:
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07-24-2012, 10:37 AM | #509 |
Scooby Guru
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:2002 WRX - 750WHP 9.5s @ 150mph |
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07-24-2012, 10:35 PM | #510 |
Scooby Newbie
Member#: 206682
Join Date: Mar 2009
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2008 WRX Stg 2.5-ish OBP (R.I.P. 05' LGT OBP!) |
Right now im making 300 awhp on a mustang dyno with a conservative tune...do i need a full recirc? or will a full atmo dump work?
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07-25-2012, 10:57 AM | #511 |
Scooby Specialist
Member#: 183480
Join Date: Jun 2008
Chapter/Region:
South East
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^ re-read the OP and it answers that question more than once and explains the answer in full detail
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07-25-2012, 05:04 PM | #512 |
Scooby Newbie
Member#: 206682
Join Date: Mar 2009
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2008 WRX Stg 2.5-ish OBP (R.I.P. 05' LGT OBP!) |
Yea, still lost
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07-25-2012, 05:32 PM | #513 |
Scooby Specialist
Member#: 183480
Join Date: Jun 2008
Chapter/Region:
South East
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a full recirc valve (either stock or aftermarket), a full atmospheric valve, or a mix of somewhere in between will all work on almost any setup. bov's/bpv's are not selected based on whp, so the whp of your setup is irrelevant.
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07-25-2012, 11:38 PM | #514 |
Scooby Specialist
Member#: 175565
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: KCMO
Vehicle:2014 Sport Premium Satin White Pearl |
Interesting, that sucks.
I have a feeling you are still going to be lost, I would recommend calling a local tuner and asking them to explain it to you and ask what they recommend. Most avoid aftermarket due to the fact the are more prone to leak than a stock bpv. The metal bpv on the 2005 STI's can be crushed to run up to 30psi and even stock can handle 25psi. How much boost are you running now that you feel you need to switch? |
07-25-2012, 11:40 PM | #515 |
Scooby Guru
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:2002 WRX - 750WHP 9.5s @ 150mph |
If you have to ask, you should run fully recirculating.
VTA and 50/50 can work fine, but they generally need proper setup to work well. If you set them up wrong they will run like crap. Either a lot of flutter/surge, or backfiring and stalling. Sometimes all of the above. On the other hand, recirculating BPV's are pretty self explanatory. Usually you can just bolt them on and never touch them again. |
07-26-2012, 12:06 PM | #516 | |
Scooby Specialist
Member#: 183480
Join Date: Jun 2008
Chapter/Region:
South East
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Quote:
just fyi, if you are trying to run more boost than the stock spring can hold, you are going to start overcoming the spring pressure, and the valve is going to start leaking in boost. this will mean that to continue to hold boost, you are going to have to increase the wastegate duty cycle. in short, you are going to be working the turbo much harder to try and compensate for the weak valve. now, if your turbo is smaller and not capable of flowing air fast enough to compensate for the leaking valve, you will see this problem occuring fairly easy because you are going to be running the turbo close to the top of its boost range even without the leak...BUT...if your turbo is bigger and capable of flowing much more boost than you are targeting, you may not see anything going on because you may not be targeting boost high enough to get the turbo to the top of its boost range. |
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07-26-2012, 01:41 PM | #517 |
Scooby Newbie
Member#: 206682
Join Date: Mar 2009
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2008 WRX Stg 2.5-ish OBP (R.I.P. 05' LGT OBP!) |
Gotcha, thanks guys
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07-26-2012, 01:43 PM | #518 |
Scooby Newbie
Member#: 206682
Join Date: Mar 2009
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2008 WRX Stg 2.5-ish OBP (R.I.P. 05' LGT OBP!) |
I'm running a VF52 @20 LBS by the way...I think I'll stay with the stocker.
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07-26-2012, 02:00 PM | #519 | |
Scooby Specialist
Member#: 33458
Join Date: Feb 2003
Chapter/Region:
Tri-State
Location: PA
Vehicle:Your BOV sounds lame 93 RX7+09 Forester |
Quote:
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07-26-2012, 07:04 PM | #520 |
Scooby Newbie
Member#: 317329
Join Date: Apr 2012
Location: St. Louis Missouri
Vehicle:2003 Legacy Silver |
Great read!
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07-27-2012, 11:25 PM | #521 |
Scooby Newbie
Member#: 327407
Join Date: Jul 2012
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you saved my butt!!! my wrx was running rich and was putting out rich codes but maf and o2 were fine, car would almost die at idle. anywho, the bov was leaking quite a bit and because of you i fixed it and saved 500 smackarinos
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07-31-2012, 05:01 AM | #522 | |
Scooby Newbie
Member#: 327606
Join Date: Jul 2012
Chapter/Region:
MAIC
Location: Arlington, VA
Vehicle:2012 Subaru Dark Grey Metallic |
what shop?
Quote:
What shop in MD? I am stationed at Andrews. Thanks |
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07-31-2012, 02:24 PM | #523 |
Scooby Specialist
Member#: 244190
Join Date: Apr 2010
Location: Madison, WI
Vehicle:2004 WRB WRXes Sedan and Wagon |
I feel like after 20 pages davnow has given up on trying. :-D
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07-31-2012, 06:58 PM | #524 | |
Scooby Newbie
Member#: 327606
Join Date: Jul 2012
Chapter/Region:
MAIC
Location: Arlington, VA
Vehicle:2012 Subaru Dark Grey Metallic |
So which one?
Quote:
I would like your opinion on which exact BOV you would put on a 2012 sti? I will only be taking the car to a stage 2 for now. I would like a noisy reliable BOV. I don't mind paying a little more either. Great advice DAVENOW, I am learning a little bit every day from this bad A$$ forum. Thanks, Nathan |
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08-06-2012, 05:18 PM | #525 |
Scooby Newbie
Member#: 328316
Join Date: Aug 2012
Chapter/Region:
Tri-State
Location: Horsham, PA
Vehicle:1999 Impreza L |
thank you for clearing this up, you just proved me right against some of my friends!
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