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Old 03-18-2016, 12:39 AM   #776
noobside619
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great post...thanks
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Old 03-27-2016, 10:41 PM   #777
51ETREX
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Great read...
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Old 03-31-2016, 01:11 AM   #778
hunterdms
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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.
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Old 04-03-2016, 05:42 PM   #779
delco
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Awesome post, I need more time to read it and decide something about what BOV must buy.

Any advice?


Regards
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Old 05-09-2016, 02:43 PM   #780
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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.
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Old 05-09-2016, 08:35 PM   #781
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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
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Old 05-09-2016, 08:52 PM   #782
EYeomans
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This was actually really helpful. Thanks for taking your time to do this man.
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Old 05-11-2016, 01:52 PM   #783
prohispano
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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?
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Old 05-11-2016, 05:17 PM   #784
Chris Cuevas
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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?
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Old 05-12-2016, 02:46 AM   #785
prohispano
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Quote:
Originally Posted by Chris Cuevas View Post
How much boost are you running?
Im at 15 psi for daily drive
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Old 05-12-2016, 03:27 AM   #786
Chuckls
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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.
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Old 05-15-2016, 01:43 AM   #787
prohispano
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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
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Old 06-15-2016, 09:03 PM   #788
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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
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Old 06-17-2016, 11:41 AM   #789
WRXtoCustom
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Excellent write-up. New to the NASIOC forums and the amount of well crafted content is astounding.
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Old 08-05-2016, 01:23 AM   #790
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why do i feel like i've read this exact thread before?
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Old 08-23-2016, 11:11 PM   #791
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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.
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Old 09-11-2016, 10:35 AM   #792
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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.
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Old 09-11-2016, 11:57 PM   #793
lowcalist_wrx
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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.
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Old 10-05-2016, 12:18 PM   #794
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Thanks for taking the time to write this ! Learned a lot!
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Old 10-08-2016, 08:13 PM   #795
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Wow, the wealth of info in this thread for newbs. I am newbie and new to NASIOC.
Thank you for explaining it all
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Old 10-14-2016, 01:45 PM   #796
Zanyy
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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.
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Old 11-10-2016, 06:50 PM   #797
fastzrex
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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?

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Old 11-11-2016, 01:19 AM   #798
aboveaveragejoe
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Good info. So much controversy regarding these. I might go buy a full VTA tomorrow just because reasons.
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Old 11-18-2016, 01:09 PM   #799
BrapLife720
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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
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Old 11-20-2016, 02:54 PM   #800
ChristianDavis206
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Great Forum, Bovs I feel are usually a misunderstood mod.
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