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Old 12-03-2009, 09:30 PM   #126
Organic_MK
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bovs make my subie unhappy.


this is reason enough not to run one.
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Old 12-03-2009, 10:41 PM   #127
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Quote:
Originally Posted by Defiant Autospeed View Post
3 stickies in the newbie forum and they still wont make me a mod here

You know why? I'll tell you why- It's because you haven't sent me any free crap yet
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Old 12-05-2009, 11:40 AM   #128
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BTW just to make it clear, this isnt a "everyone go buy a bov!" thing. Im not saying everyone should have one, its a personal choice. Im just saying, if you dont want to run one, make sure you dont want to run it for the right reasons.
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Old 12-05-2009, 02:10 PM   #129
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really good info in here. where it said it was bad for cats. i thought it was bad for felines.
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Old 12-05-2009, 03:19 PM   #130
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I mean its not particularly great for them, but its no worse than running an overly rich off the shelf map, which MANY of them are.

Actually its not as bad for them as an overly rich map. An overly rich map will be rich constantly. A bov has tiny rich spots only on vent.
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Old 12-15-2009, 10:03 AM   #131
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Nice write up and discussion Dave.
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Old 12-15-2009, 10:31 AM   #132
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I blame all my life problems on my BOV. It makes a good scapegoat for everything.
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Old 12-15-2009, 02:37 PM   #133
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I just got a paper cut.


$&^#@ BOV. Had I gone with a recirc this would never have happened.
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Old 12-15-2009, 03:31 PM   #134
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this is interesting.... supposidly it is only rich for a BRIEF moment.... yet some people's car run terrible with BOV's and others claim there car runs fine...
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Old 12-15-2009, 03:50 PM   #135
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NICE POST! I will laugh everytime I read BOV posts. I will just send them here. I feel like more posts need to be simple and to the point. Some of unabombers posts should be made into some simplified versions. not hating on his at all I just think more people would read them if they were a bit shorter and to the point
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Old 12-15-2009, 09:24 PM   #136
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Thanks to this post, I've mad my decision on BOVs. +1
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Old 12-15-2009, 11:58 PM   #137
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interesting... i come from ms3, and it's a different story. 1. you can't run VTA (unless you are modded to the teeth) 2. I had RKM SSQ valve, that i found to be very effective. 3. Forge (ninja sword), was a nice bpv. It did the same exact function as a stock one, but just made a ninja sword sound (kind of like a bov sound).
aftermarket bpv's made a difference in ms3's. ms3's would loose power after 5500rpm, if you had a CAI and DP (which made the car run a little higher boost and push more power in general), on a good bpv the car would hold boost for a lot longer. i did an experiment, stock bpv vs rkm. at 6000rpm on stocker my boost dropped to 5psi. with rkm it would drop only to 10-12psi. test was done the same day, 30 minutes in between. Aftermarket BPV did not add any power, but it helped to hold stock power a lot better....
So you are saying it's not the case with STI's?
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Old 12-16-2009, 09:45 AM   #138
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STI's hold their stock boost levels to redline (maybe 2 psi drop) which would put you at 12psi like u were saying. At least that's my experience. 5 psig sounds horrible.
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Old 12-17-2009, 09:27 AM   #139
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awesome write up man
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Old 12-17-2009, 12:06 PM   #140
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Quote:
Originally Posted by Davenow View Post
Ricer is a state of mind. You can have an F50 and still be a ricer if you do ricey crap to it and behave in a ricer kind of way.

BOVs make you a ricer just like owning an SRT-4 makes you a retard.

Its not that the valve or car are ACTUALLY linked to being a ricer or a retard. Its just that the majority of people WITH them, are ricers and retards. So it gets a whole bad stigma. Plus ricers, the first word out of their mouth when they think of a turbo car is "bov"
I just lol'd in the middle of class. excellent write up though. short and to the point. the only thing i didnt see you mention is "will getting a tune after BOV install help the car run better with it or it doesnt matter?" i could only assume that it will but would like your opinion
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Old 12-17-2009, 08:07 PM   #141
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i think people get confused with the term tuning in regards to a BOV. you CAN NOT tune for a blow off valve.. there is 2 things that may be related in sorts which can be thought of as tuning. 1 being that you have to adjust your BOV so that it works properly, maybe during a tune when boost is raised, you have to adjust it for added pressure.. 2 going with a blow thru maf setup, you would get your maf rescaled for the different location its in which in point lets you run a VTA blow off valve with out the negitive side effects. if you think of it this way. when a BOV vents, its when the motor is on its way back to an idle state. the maf is looking for air being recirc'd back into the intake which its not seeing. hence the lil spike in AFR. for anything to be possibly tuned for a VTA blow off valve would be like tuning the car at idle. hence why it cant be done with just a normal setup.
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Old 12-17-2009, 09:01 PM   #142
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Huh?

My maps have a totaly different MAF table for BOV and recirc valves for a reason.
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Old 12-17-2009, 10:55 PM   #143
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This is very very good info!
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Old 12-20-2009, 02:12 PM   #144
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nice....
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Old 12-20-2009, 09:34 PM   #145
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This is a sticky now? Hot damn, this might save a few unnecessary new threads if you know what I mean.
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Old 12-21-2009, 09:26 AM   #146
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This thread is very good...
Its funny how a psshshhshshs sound can sound so sexy on a your car, and so annoying on a garbage truck.

It seems that no BOV is just less headache. If its one less place for possible leaks, I am all for not having it.
If there was any gain, I would be saying something else.
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Old 12-24-2009, 04:31 PM   #147
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So is it true that the 09' s bov is weak? i'm stage 2 And about to do injectors a better top mount and a Bcs. I'm now wondering if I should invest in a Perrin recirc valve and be done with it. It should be around 19 or 20 psi when done. I'll take the abuse for being a subby nube but that's how we learn. 09 wrx TBE catted with aem intake and protuned.
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Old 12-24-2009, 05:07 PM   #148
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Quote:
Originally Posted by Dragonfueled View Post
So is it true that the 09' s bov is weak? i'm stage 2 And about to do injectors a better top mount and a Bcs. I'm now wondering if I should invest in a Perrin recirc valve and be done with it. It should be around 19 or 20 psi when done. I'll take the abuse for being a subby nube but that's how we learn. 09 wrx TBE catted with aem intake and protuned.

Yes, I would definitely recommend an aftermarket BPV.
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Old 12-26-2009, 12:56 PM   #149
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Yeah the 08-09 plastic valve (also the plastic valves that came on the LGT years before that) are garbage, and typically leak anywhere above stock boost. On a "stage 2" car, imo, a replacement valve is an absolute must. If you dont want the noise or somehow are still not understanding the entire concept about a valve not making you "run rich", there are many 100% recirculating options on the market
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Old 12-27-2009, 01:00 AM   #150
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Are there any recirc valves that are like stock only don't leak? I don't want something with a 100 adjustments. Or can I just get a Perrin recirc and not touch it. Sorry for questions but I'm about to use perrins sale for a top mount ebcs and bpv to add to my stage 2. Just wanna get all the info I can before I pull the trigger and regret it.
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