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Old 07-09-2010, 01:29 PM   #1
emsbuff124
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Default Hybrid 50/50 BOV

Wondering what is the best Hybrid 50/50 BOV to get besides Turboxs my tuner told me to stay away from the Turboxs and such i am doing so.

Mods to car
vf43 turbo
sti intercooler
walbro 255 fuel pump- ordered
Cp pistons
APR engine studs
APS hard turbo inlet or Samco inlet have not decided yet
3inch dp to ethier a 2.5 or 3inch exhaust
after market boost controler

I know fuel vent BOVs can be bad unless your running high boost levels

yes i will be retuning the car again

Ive looked into aps 50/50 and other ones as well just wondering what you guys like/ use

thanks
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Old 07-09-2010, 01:31 PM   #2
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Quote:
Originally Posted by emsbuff124 View Post
Wondering what is the best Hybrid 50/50 BOV to get besides Turboxs my tuner told me to stay away from the Turboxs and such i am doing so.

Mods to car
vf43 turbo
sti intercooler
walbro 255 fuel pump- ordered
Cp pistons
APR engine studs
APS hard turbo inlet or Samco inlet have not decided yet
3inch dp to ethier a 2.5 or 3inch exhaust
after market boost controler

I know fuel vent BOVs can be bad unless your running high boost levels

yes i will be retuning the car again

Ive looked into aps 50/50 and other ones as well just wondering what you guys like/ use

thanks
Other than TurboXS, Tial

They are the top two. However, if you trust your tuner, listen to him. The Tial will run $300ish.

If I were you, I would do some more research or reach out to other shops and get their input.
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Old 07-09-2010, 02:02 PM   #3
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The Tial wont be a 50/50 set up but I have heard good things about the GFB go fast bits valves. Check into them, if you can justify it with boost though its hard to beat the Tial or the Synapse.

Will
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Old 07-09-2010, 02:10 PM   #4
emsbuff124
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Originally Posted by GrimmSpeed View Post
The Tial wont be a 50/50 set up but I have heard good things about the GFB go fast bits valves. Check into them, if you can justify it with boost though its hard to beat the Tial or the Synapse.

Will
hmm ill look into the gfb

i saw a tial on an EFI's customer car but i know they are work to put on i was look at the hks but i wont be putting crazy boost #s down soi a full vent prob not the best
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Old 07-11-2010, 10:22 AM   #5
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Just get a forge bpv. Josh at import image has great deals on them. It spools a touch faster, it's a little louder than stock and most importantly you hold peak boost longer. I was gonna get the gfb one myself. Then I did a bunch of research and came to the conclusion that full recirc is the way to go
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Old 07-11-2010, 11:41 AM   #6
emsbuff124
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hmm ill check that out too, i just want the shifting sound but i dont need the whole world to here it like a fuel vent does
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Old 07-11-2010, 12:35 PM   #7
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Originally Posted by emsbuff124 View Post
hmm ill check that out too, i just want the shifting sound but i dont need the whole world to here it like a fuel vent does
If all you are after is noise, get an intake. Preferably a CAI, but you will need to retune. The sound of boost recirculating into the aluminum intake vs plastic will be 10x louder.

The problem with a 50/50 is that with every shift you will lose power. Especially with our cars designed and tuned to have full recirc. You will notice spooling will take a bit longer after the install. However, if all you want is noise, 50/50 is your best bet.
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Old 07-11-2010, 12:43 PM   #8
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Originally Posted by TEK112 View Post
If all you are after is noise, get an intake. Preferably a CAI, but you will need to retune. The sound of boost recirculating into the aluminum intake vs plastic will be 10x louder.

The problem with a 50/50 is that with every shift you will lose power. Especially with our cars designed and tuned to have full recirc. You will notice spooling will take a bit longer after the install. However, if all you want is noise, 50/50 is your best bet.
Yeah im still on the fence with the BOV i know that unless your high boosting they can be a waste. I actually did do the CAI 65mm by aps I love the sound that it makes and the fact that i can re-use my stock MAF with out a retune ( i tuned the car anyway)
I may look into the forge full recirluating bov
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Old 07-11-2010, 03:09 PM   #9
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Originally Posted by TEK112 View Post
If all you are after is noise, get an intake. Preferably a CAI, but you will need to retune. The sound of boost recirculating into the aluminum intake vs plastic will be 10x louder.

The problem with a 50/50 is that with every shift you will lose power. Especially with our cars designed and tuned to have full recirc. You will notice spooling will take a bit longer after the install. However, if all you want is noise, 50/50 is your best bet.
Since when do you lose power with every shift????? Please provide proof.

This is what I know. With a blow off valve everytime your throttle closes the air is let off into the atmosphere and for A SPLIT second you run a TAD rich. To most poeple you dont even feel any difference in power, I run a TXS BOV with my setup and yeah I get the occasional pop but I am sure as hell not losing any power and I dont feel any hesitation with acceleration.

Just my thoughts...
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Old 07-11-2010, 04:38 PM   #10
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Originally Posted by Impreza541 View Post
Since when do you lose power with every shift????? Please provide proof.

This is what I know. With a blow off valve everytime your throttle closes the air is let off into the atmosphere and for A SPLIT second you run a TAD rich. To most poeple you dont even feel any difference in power, I run a TXS BOV with my setup and yeah I get the occasional pop but I am sure as hell not losing any power and I dont feel any hesitation with acceleration.

Just my thoughts...
It's simple enough, but given your excessive use of question marks, you sound upset and perhaps feel a need to prove something?

Why don't you explain to me how letting the pressurized air (which normally goes back into the intake) escape the intake system would not cause a decrease in spool time.
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Old 07-11-2010, 07:02 PM   #11
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yes forge bpv FTMFW!!!!!! why screw with the way the car was built to run. you will notice a little diff in sound, a bit louder. unless youre gonna run a blow thru its not worth it in my mind. i spoke to several tuners and all of them said get the forge. not only is it cheaper from josh at import image or geoff at cygnus motorsports but imo its better. you can tune it with different springs that come with it. it has a silver spring for stock levels, yellow for i think 17-23lbs, and red thats 24-30+. on iwsti if you search "forge" we had a good discussion on it.

good luck either way you go
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Old 07-11-2010, 11:24 PM   #12
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yes forge bpv FTMFW!!!!!! why screw with the way the car was built to run. you will notice a little diff in sound, a bit louder. unless youre gonna run a blow thru its not worth it in my mind. i spoke to several tuners and all of them said get the forge. not only is it cheaper from josh at import image or geoff at cygnus motorsports but imo its better. you can tune it with different springs that come with it. it has a silver spring for stock levels, yellow for i think 17-23lbs, and red thats 24-30+. on iwsti if you search "forge" we had a good discussion on it.

good luck either way you go
Hey thanks man,
Yeah im really looking into the Forge bpv for a $150 it seems as you can go wrong the whole reason behind me upgrading my stock BOV was to have something that can grow with my car engine grows. But looking into the Forged bpv and being able to customize it seems the best way to go so im not monkeying with the way my car was designed to run
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Old 07-11-2010, 11:46 PM   #13
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yes forge bpv FTMFW!!!!!! why screw with the way the car was built to run. you will notice a little diff in sound, a bit louder. unless youre gonna run a blow thru its not worth it in my mind. i spoke to several tuners and all of them said get the forge. not only is it cheaper from josh at import image or geoff at cygnus motorsports but imo its better. you can tune it with different springs that come with it. it has a silver spring for stock levels, yellow for i think 17-23lbs, and red thats 24-30+. on iwsti if you search "forge" we had a good discussion on it.

good luck either way you go
I will be the first to admit I don't know enough about forge. Do you have some resources you can point me towards?

I am always looking for new info as I plan on upgrading my crappy plastic factory one.

Thanks.
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Old 07-12-2010, 12:22 PM   #14
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Here

http://www.iwsti.com/forums/2-5-lite...209-forge.html

also if you log onto iwsti.com and search forge bpv or something along those lines you will find several good threads. You can also call Josh at importimage.com or geoff at cygnusmotorsports.com and eith of them will hook you up with a great deal

I personally haven't gotten butterflies from my car in over a year untill I put this in. Now my needle sits at full boost instead of hitting it and bleeding off instantly. 3rd and 4th gears just keep going it's great
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Old 07-12-2010, 04:12 PM   #15
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Originally Posted by TEK112 View Post
It's simple enough, but given your excessive use of question marks, you sound upset and perhaps feel a need to prove something?

Why don't you explain to me how letting the pressurized air (which normally goes back into the intake) escape the intake system would not cause a decrease in spool time.
Because it is such a MINUTE amount of air. Your making it seem like the BOV is open for a whole 5 seconds when its only open for a SPLIT second.
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Old 07-12-2010, 04:21 PM   #16
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Because it is such a MINUTE amount of air. Your making it seem like the BOV is open for a whole 5 seconds when its only open for a SPLIT second.
This is my "proof"

http://www.importtuner.com/tech/impp...ion/index.html

Here, I'll save you some reading:

"...the amount of boost our 4B11 produced after throttle let-off with its bypass valve recirculating boost was consistently higher than with it venting to atmosphere..."

Now, you're turn.
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Old 07-12-2010, 10:44 PM   #17
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Originally Posted by TEK112 View Post
This is my "proof"

http://www.importtuner.com/tech/impp...ion/index.html

Here, I'll save you some reading:

"...the amount of boost our 4B11 produced after throttle let-off with its bypass valve recirculating boost was consistently higher than with it venting to atmosphere..."

Now, you're turn.
I was just reading the same article lol. But i also understand what the guy above is taking about. From my readings some BOV are no nos but others are the bomb. The main one was the HKS bov. Those are set up mainly like a safety release valve were they do not vent until the turbo boosts past the desired No. but really not pratical for my set up
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Old 07-12-2010, 11:58 PM   #18
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Op just get a forge bpv I'm telling u, u will be nothing less than impressed. Apperently this has turned into a pissing contest again so. IMO stick with what the car was built to run on just better then the stock one
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Old 07-13-2010, 09:40 AM   #19
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"But not by much-the benefits of recirculating will be more apparent with larger turbos, and larger, aftermarket replacement bypass or blow-off valves will likely offer improved results over original equipment, provided they offer the option to recirculate boost"

Like Ive been saying earlier. "Not by much", but I will give you kudos for digging up this article as Ive never seen a dyno comparison of the 2.
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Old 07-13-2010, 09:54 AM   #20
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"But not by much-the benefits of recirculating will be more apparent with larger turbos, and larger, aftermarket replacement bypass or blow-off valves will likely offer improved results over original equipment, provided they offer the option to recirculate boost"

Like Ive been saying earlier. "Not by much", but I will give you kudos for digging up this article as Ive never seen a dyno comparison of the 2.
You never said "not by much" in fact you said:

Quote:
Originally Posted by Impreza541 View Post
Since when do you lose power with every shift????? Please provide proof.... I run a TXS BOV with my setup and yeah I get the occasional pop, but I am sure as hell not losing any power and I dont feel any hesitation with acceleration.
Well...your butt dyno is wrong.

You asked for proof and I proved that you lose power between shifts.
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Old 07-13-2010, 05:34 PM   #21
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In words yes technically you "lose power"

But in all honesty how many blow off valve users feel it?

A properly set atmospheric valve has almost zero side effects. If someone on this board is screaming my car bucks like a bronco with a blow of valve its simply because they bought the "el cheapo" blow off valve or the spring tension isnt set right. Get a well known blow off valve and have the spring tension set the right way and there will be zero, none, zilch side effects that will damage your motor in the long run.

Like I said, if you can noticeably feel the difference between a recirc and an atmo valve something else is wrong, whether it be the valve itself or something else in the motor...
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Old 07-13-2010, 06:01 PM   #22
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Originally Posted by Impreza541 View Post
In words yes technically you "lose power"

But in all honesty how many blow off valve users feel it?

A properly set atmospheric valve has almost zero side effects. If someone on this board is screaming my car bucks like a bronco with a blow of valve its simply because they bought the "el cheapo" blow off valve or the spring tension isnt set right. Get a well known blow off valve and have the spring tension set the right way and there will be zero, none, zilch side effects that will damage your motor in the long run.

Like I said, if you can noticeably feel the difference between a recirc and an atmo valve something else is wrong, whether it be the valve itself or something else in the motor...
Dude, you need to reread everything that has been written. You will then see that none of what has been said has anything to do with what you are now arguing. No one said a BOV will damage a motor. You went off on that tangent after I showed you the proof you requested showing that you will lose power with a 50/50 over a BPV.

The bottom line is that if you switch from full recirc to 50/50 (especially on a stock set-up), you'll will lose power. That is fact, not opinion; as has been proven.
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Old 10-31-2012, 04:48 PM   #23
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Old 10-31-2012, 07:14 PM   #24
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Thanks for that ^^ insightful post in a 2 year old thread
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Old 10-31-2012, 07:42 PM   #25
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Thanks for that ^^ insightful post in a 2 year old thread
Doing what I can to help. Lol
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