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Running BOV to vent to atmosphere, any problems with that?

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Old Mar 29, 2012 | 05:12 PM
  #16  
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its a 50:50 shot that you will run into problems. Some people do, some people dont. I personally have the AMS CAI and AMS LICP w/ TiAL QR bov and its pretty loud.
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Old Mar 29, 2012 | 10:11 PM
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i heard too many mixed reports so i just tested it out myself.
pulled the stock DV off the inlet, venting it to atmosphere. then simply capped off the turbo inlet side.

i've had no negative effects, logged a few pulls. AFR looked perfect. IMO the sound is cool for like a minute then it's just out right ridiculous.
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Old Mar 29, 2012 | 11:05 PM
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Originally Posted by Kracka
Yes I do, AFE Stage 2 + Cobb inlet tube. You should really consider getting yourself an aftermarket BOV, I can guarantee your stocker is leaking your BBXLite's goodness. Don't get too hung up on just the APS, there are other quality valves on the market that are right at home on a daily-driver (Cobb BPV & Synapse DV).
It holds (and logs verify) 26psi like a champ from full spool to 7800rpm. I wouldn't run any more boost than that on 93 or an unopened engine. This is my DD, and I need her to last a good while.
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Old Mar 30, 2012 | 06:57 AM
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Originally Posted by momostallion
i heard too many mixed reports so i just tested it out myself.
pulled the stock DV off the inlet, venting it to atmosphere. then simply capped off the turbo inlet side.

i've had no negative effects, logged a few pulls. AFR looked perfect. IMO the sound is cool for like a minute then it's just out right ridiculous.
The biggest benefit is the one you can't see: those nice, shiny cylinder walls from being washed clean with gas on every hard up-shift. Over time, this can make a huge difference. Maybe not today. Maybe not tomorrow. But at some point your dipstick will shoot up, denting the bottom of your hood, and you'll have the deep satisfaction that can only come with a vented DV + MAF set-up.
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Old Mar 30, 2012 | 07:55 AM
  #20  
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Originally Posted by Iowa999
The biggest benefit is the one you can't see: those nice, shiny cylinder walls from being washed clean with gas on every hard up-shift. Over time, this can make a huge difference. Maybe not today. Maybe not tomorrow. But at some point your dipstick will shoot up, denting the bottom of your hood, and you'll have the deep satisfaction that can only come with a vented DV + MAF set-up.
So much win!
But if a noobie came across this he/she might not be able to detect your sarcasm.
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Old Mar 30, 2012 | 08:15 AM
  #21  
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Originally Posted by Noize
It holds (and logs verify) 26psi like a champ from full spool to 7800rpm. I wouldn't run any more boost than that on 93 or an unopened engine. This is my DD, and I need her to last a good while.
I'm running 26 too, but just because your turbo can hold 26 doesn't mean your BOV is...it just means your turbo is working harder than it needs to. Find a local to borrow a BOV from for a quick test, I guarantee you'll over-boost well beyond 26. Anyway, keep it in mind before your next tune.
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Old Mar 30, 2012 | 08:23 AM
  #22  
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Originally Posted by Ev0ikon
So much win!
But if a noobie came across this he/she might not be able to detect your sarcasm.
yea, i kinda think someone is going to read that as "oh wow, venting to atmosphere keeps my engine clean!"
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Old Mar 30, 2012 | 11:39 AM
  #23  
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MAF and VTA is a no no in the evo. Open intake will give you enough sound as it is.
Dont do it.
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Old Mar 30, 2012 | 11:55 AM
  #24  
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Originally Posted by Kracka
I'm running 26 too, but just because your turbo can hold 26 doesn't mean your BOV is...it just means your turbo is working harder than it needs to. Find a local to borrow a BOV from for a quick test, I guarantee you'll over-boost well beyond 26. Anyway, keep it in mind before your next tune.
I have tried a couple aftermarket ones from friends cars as aforementioned, but it won't ever overboost no matter what, error correction doesn't let it. I'm psi based boost control through the ECU. I did a lot of research before settling on a tuner.

The logs are rock solid, and the DV has proven during tuning that it can handle more boost. I think I just got lucky and got a good stock unit.
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Old Mar 30, 2012 | 12:50 PM
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Originally Posted by Noize
I have tried a couple aftermarket ones from friends cars as aforementioned, but it won't ever overboost no matter what, error correction doesn't let it. I'm psi based boost control through the ECU. I did a lot of research before settling on a tuner.

The logs are rock solid, and the DV has proven during tuning that it can handle more boost. I think I just got lucky and got a good stock unit.
stock BOV's are awesome under 26 psi. There is no better then that. Proven works great and cheap, what else you need ?
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Old Mar 30, 2012 | 01:55 PM
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Originally Posted by Ev0ikon
But if a noobie came across this he/she might not be able to detect your sarcasm.
If I laid it on any thicker, my monitor would fall over. And these are Evolutions that we're talking about, anyway, so it seems perfectly fine to me if my posts help weed out the weak.
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Old Mar 30, 2012 | 02:01 PM
  #27  
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Originally Posted by Iowa999
If I laid it on any thicker, my monitor would fall over. And these are Evolutions that we're talking about, anyway, so it seems perfectly fine to me if my posts help weed out the weak.
i think if somebody want to understand it they will, almost a same deal like i have many times with my posts. I have a bad English granted, but people always answer to them spot on, unless they being challenged and they do not have an answer for it, other then this : because i told you...
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Old Mar 30, 2012 | 02:16 PM
  #28  
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how does VTA result in washing your cylinder walls with gas? - curious noob.
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Old Mar 30, 2012 | 02:35 PM
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Originally Posted by wjamyers
how does VTA result in washing your cylinder walls with gas? - curious noob.
The MAF sensor reads all that air that you're venting to atmosphere and enough gas is injected for it.
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Old Mar 30, 2012 | 08:10 PM
  #30  
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Originally Posted by momostallion
i heard too many mixed reports so i just tested it out myself.
pulled the stock DV off the inlet, venting it to atmosphere. then simply capped off the turbo inlet side.

i've had no negative effects, logged a few pulls. AFR looked perfect. IMO the sound is cool for like a minute then it's just out right ridiculous.

Thats just being a ricer. Might as well get one of those turbo whistlers you put in your exhaust pipe. Here is my car with bb FP Red, AMS Intake, AMS LICP w/ TiAL QR bov and other mods. It's fully recirculated and you still get the bov sound with no negitive side effects. In person its pretty loud, anything louder would just be ricey and annoying.


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Last edited by Snakes709; Mar 30, 2012 at 08:15 PM.
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