Welcome to the North American Subaru Impreza Owners Club Monday September 23, 2019
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Newbies & FAQs

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 03-18-2016, 12:39 AM   #776
noobside619
Scooby Newbie
 
Member#: 442799
Join Date: Mar 2016
Default

great post...thanks
* Registered users of the site do not see these ads.
noobside619 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-27-2016, 10:41 PM   #777
51ETREX
Scooby Newbie
 
Member#: 443501
Join Date: Mar 2016
Default

Great read...
51ETREX is offline   Reply With Quote
Old 03-31-2016, 01:11 AM   #778
hunterdms
Scooby Specialist
 
Member#: 443766
Join Date: Mar 2016
Chapter/Region: NESIC
Location: MA
Vehicle:
2005 Hybrid WRX STI
Pearl White

Default HKS SSQV on 02 rex?

Has anybody run an HKS BOV on an 02 before? Looking into a few different BOVs and I wanna know how this one sounds/functions.
hunterdms is offline   Reply With Quote
Old 04-03-2016, 05:42 PM   #779
delco
Scooby Newbie
 
Member#: 443995
Join Date: Apr 2016
Default

Awesome post, I need more time to read it and decide something about what BOV must buy.

Any advice?


Regards
delco is offline   Reply With Quote
Old 05-09-2016, 02:43 PM   #780
prohispano
Scooby Newbie
 
Member#: 393739
Join Date: Jun 2014
Location: Honduras
Vehicle:
2002
Midnight Blue Pearl

Default

Well, my question is, on 02 wrx with stage 3 upgrade (vf39,tmic....), can i get an blow off valve? stock bpv in the car when i buy it, but wasnt recirculating, has an aluminum thing in there, so it sounds like bov and have not cell.
prohispano is offline   Reply With Quote
Old 05-09-2016, 08:35 PM   #781
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

Quote:
Originally Posted by prohispano View Post
Well, my question is, on 02 wrx with stage 3 upgrade (vf39,tmic....), can i get an blow off valve? stock bpv in the car when i buy it, but wasnt recirculating, has an aluminum thing in there, so it sounds like bov and have not cell.

That's a stage now ? Lol you can use any bov you want. You will not see any performance again from it with your stage 3 set up
bmxhotsauce is offline   Reply With Quote
Old 05-09-2016, 08:52 PM   #782
EYeomans
Scooby Newbie
 
Member#: 446545
Join Date: May 2016
Default

This was actually really helpful. Thanks for taking your time to do this man.
EYeomans is offline   Reply With Quote
Old 05-11-2016, 01:52 PM   #783
prohispano
Scooby Newbie
 
Member#: 393739
Join Date: Jun 2014
Location: Honduras
Vehicle:
2002
Midnight Blue Pearl

Default

Quote:
Originally Posted by bmxhotsauce View Post
That's a stage now ? Lol you can use any bov you want. You will not see any performance again from it with your stage 3 set up
Yeah stage 3 its bigger turbo and supporting mods.

What BOV you recommend me?
prohispano is offline   Reply With Quote
Old 05-11-2016, 05:17 PM   #784
Chris Cuevas
Scooby Specialist
 
Member#: 75547
Join Date: Nov 2004
Chapter/Region: SCIC
Location: San Diego, CA
Vehicle:
2016 STi-ICE Silver
Subaru Ambassador

Default

Quote:
Originally Posted by prohispano View Post
Yeah stage 3 its bigger turbo and supporting mods.

What BOV you recommend me?
How much boost are you running?
Chris Cuevas is offline   Reply With Quote
Old 05-12-2016, 02:46 AM   #785
prohispano
Scooby Newbie
 
Member#: 393739
Join Date: Jun 2014
Location: Honduras
Vehicle:
2002
Midnight Blue Pearl

Default

Quote:
Originally Posted by Chris Cuevas View Post
How much boost are you running?
Im at 15 psi for daily drive
prohispano is offline   Reply With Quote
Old 05-12-2016, 03:27 AM   #786
Chuckls
Scooby Specialist
 
Member#: 280696
Join Date: Apr 2011
Chapter/Region: MWSOC
Default

Quote:
Originally Posted by prohispano View Post
Im at 15 psi for daily drive
YOu dont need a BOV. Stick with recirc. Better for MAF.
Chuckls is offline   Reply With Quote
Old 05-15-2016, 01:43 AM   #787
prohispano
Scooby Newbie
 
Member#: 393739
Join Date: Jun 2014
Location: Honduras
Vehicle:
2002
Midnight Blue Pearl

Default

Quote:
Originally Posted by Chuckls View Post
YOu dont need a BOV. Stick with recirc. Better for MAF.
Thanks for the opinion , but i really want the sound :c, already im straight piped so i really dont hear any turbo sounds XD
prohispano is offline   Reply With Quote
Old 06-15-2016, 09:03 PM   #788
autoshmo
Scooby Newbie
 
Member#: 448911
Join Date: Jun 2016
Chapter/Region: Tri-State
Location: poughkeepsie ny
Vehicle:
2006 wrx
red

Default

i am glad I found this info. I don't really care about to noise, and if stock can handle my boost then id rather not "upgrade" something that's not giving me gains.
thanks for the write up
autoshmo is offline   Reply With Quote
Old 06-17-2016, 11:41 AM   #789
WRXtoCustom
Scooby Newbie
 
Member#: 448610
Join Date: Jun 2016
Vehicle:
2004 WRX

Default

Excellent write-up. New to the NASIOC forums and the amount of well crafted content is astounding.
WRXtoCustom is offline   Reply With Quote
Old 08-05-2016, 01:23 AM   #790
aryuary
*** Banned ***
 
Member#: 452031
Join Date: Aug 2016
Default

why do i feel like i've read this exact thread before?
aryuary is offline   Reply With Quote
Old 08-23-2016, 11:11 PM   #791
StarryBoar
Scooby Newbie
 
Member#: 418997
Join Date: Apr 2015
Location: Wyoming
Vehicle:
2005 Impreza STI
Silver

Default

Good info man. Im still really on the fence though about whether to look into a full recirc, 50/50, or VTA. I have an HKS on my 05 STi not by choice but by purchasing of the vehicle. So far its held up great, sounds awesome, and can not find an issue with it. I am also looking into tuning her myself. Is there anything in data logging that will point to a BOV leak? Thanks.
StarryBoar is offline   Reply With Quote
Old 09-11-2016, 10:35 AM   #792
nathan.d.kim
Scooby Specialist
 
Member#: 157161
Join Date: Aug 2007
Chapter/Region: MAIC
Vehicle:
2007 OBP STI
black

Default

Quote:
Originally Posted by StarryBoar View Post
Good info man. Im still really on the fence though about whether to look into a full recirc, 50/50, or VTA. I have an HKS on my 05 STi not by choice but by purchasing of the vehicle. So far its held up great, sounds awesome, and can not find an issue with it. I am also looking into tuning her myself. Is there anything in data logging that will point to a BOV leak? Thanks.
On my 07 STI, I use my APv3 to monitor DAM, Fine Knock Learning, Feedback Knock, and AF Learning 1.

I look to make sure DAM stays at 1.0, FKL at 0.0, FBK no higher that +/- 1.4 (can go up a bit more), and AF Learning 1 no greater than +/- 8%.

A boost leak including one from the BPV can throw off any of these values depending on how bad the leak is.

I don't recommend anything BUT a recirculating valve. And that's only if you're boosting more than 22 psi. Get a stocker back on if you're not heavily modified. The older STIs and metal body BPVs instead of the plastic junk. I believe the metal ones are less leaky.

I had an APS 50/50 for a long time. It was a great piece and I maintained it well, but it was still not ideal for the motor. I have a Cobb now that does both full recirc and 50/50, but it is also prone to leak. The instructions say I should take it off and service the BPV at every oil change - not ideal.
nathan.d.kim is offline   Reply With Quote
Old 09-11-2016, 11:57 PM   #793
lowcalist_wrx
Scooby Newbie
 
Member#: 454374
Join Date: Sep 2016
Vehicle:
2004 Subaru WRX

Default

Personally, on my '04 WRX the previous owner gave me a BOV along with my purchase. I'm not to sure of the brand, I would have to go look, but it was a pretty nice one.

Anyway, a month or so after I bought my car I tried it out and within about a day and a half I took it right off. Obviously, there were no performance benefits to it and, I'll be honest, I did like the sound. The only problem was that the "psshh" it gave off lasted for a second or two and it made me feel like I couldn't shift as quickly. I'm not really sure how to explain in, you would have to drive it to understand.

I wouldn't get a BOV, to me it's a waste of money.
lowcalist_wrx is offline   Reply With Quote
Old 10-05-2016, 12:18 PM   #794
teewrxx
Scooby Newbie
 
Member#: 455777
Join Date: Oct 2016
Chapter/Region: SCIC
Vehicle:
2013 WRX Hatch
Plasma Blue Pearl

Default

Thanks for taking the time to write this ! Learned a lot!
teewrxx is offline   Reply With Quote
Old 10-08-2016, 08:13 PM   #795
Dialtone
Scooby Newbie
 
Member#: 454032
Join Date: Sep 2016
Location: SoCaL
Vehicle:
1964 Riviera

Default

Wow, the wealth of info in this thread for newbs. I am newbie and new to NASIOC.
Thank you for explaining it all
Dialtone is offline   Reply With Quote
Old 10-14-2016, 01:45 PM   #796
Zanyy
Scooby Newbie
 
Member#: 449628
Join Date: Jun 2016
Location: New York
Vehicle:
2014 Impreza WRX
Ice Silver

Default

Thanks for the post. Really considering a BOV but I'm afraid I'll get annoyed by it eventually. I'll definitely refer back to this post when I finally make up my mind.
Zanyy is offline   Reply With Quote
Old 11-10-2016, 06:50 PM   #797
fastzrex
Scooby Newbie
 
Member#: 457341
Join Date: Oct 2016
Location: Oklahoma City
Vehicle:
2007 WRX Wagon
Blue

Default BPV verses BOV

Is there really any advantage to going to a BOV? Is there a real advantage above (or below) a certain boost level, or is it only for the noise?

I recently acquired a 2007 WRX with 133K miles. I am currently in the process of removing the engine for a good look over, timing belt change, look for hard gasket leakage, cam oil seal (it looks to have a leak now), etc. Depending on what I find, I may go with a new OEM stock short block and upgrade to a a different turbo. Does it make more sense to stay with a BPV even at 25-30 psi?

fastzrex
fastzrex is offline   Reply With Quote
Old 11-11-2016, 01:19 AM   #798
aboveaveragejoe
Scooby Newbie
 
Member#: 454859
Join Date: Sep 2016
Default

Good info. So much controversy regarding these. I might go buy a full VTA tomorrow just because reasons.
aboveaveragejoe is offline   Reply With Quote
Old 11-18-2016, 01:09 PM   #799
BrapLife720
Scooby Newbie
 
Member#: 457128
Join Date: Oct 2016
Chapter/Region: South East
Location: Central Florida
Vehicle:
2012 WRX Hatch
Satin White Pearl

Default

Excellent FAQ write-up! While getting straight to the point, there's valuable information provided. I never realized how simple it is to set up a BOV. And yeah, "sleeper" mode all the way =D
BrapLife720 is offline   Reply With Quote
Old 11-20-2016, 02:54 PM   #800
ChristianDavis206
Scooby Newbie
 
Member#: 458475
Join Date: Nov 2016
Default

Great Forum, Bovs I feel are usually a misunderstood mod.
ChristianDavis206 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
General Subie Newbie FAQ. Lets answer a few common questions and dispell some myths. Defiant Autospeed Newbies & FAQs 60 11-11-2016 01:23 AM
2.0L or 2.5L what are the ups and downs thewannab2002 Newbies & FAQs 28 05-27-2010 12:18 AM
The ups and downs of life MGXsport Off-Topic 14 09-10-2007 10:03 PM
S-AFC ups and downs y2k02scoob Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 11 05-16-2003 05:21 PM
What are the ups and downs of a dog box- any brand? GT2WRX Transmission (AT/MT) & Driveline 23 08-06-2002 08:30 PM

All times are GMT -4. The time now is 03:34 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.