Running without bov

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enjoi.this

Formerly ChrisC
Aug 18, 2008
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Almost every local turbo car owner around here isnt running a bov. almost all the drifters since they get better throttle response and even GT35R subarus arnt running one. Had a guy telling me tonight that high hp tuners dont run bov's on theyr setups due to hickups and going rich between shifts (which is understandable). Compressor surge isnt good at all but they seem to not think so...?

What are the pros and cons to not running a bov? (want to hear both sides)
The disscusions over here are getting redundant on the bov thing. :nono:
 

TomFraser

New Member
ChrisC;1359568 said:
Almost every local turbo car owner around here isnt running a bov. almost all the drifters since they get better throttle response and even GT35R subarus arnt running one. Had a guy telling me tonight that high hp tuners dont run bov's on theyr setups due to hickups and going rich between shifts (which is understandable). Compressor surge isnt good at all but they seem to not think so...?

What are the pros and cons to not running a bov? (want to hear both sides)
The disscusions over here are getting redundant on the bov thing. :nono:

maybe talking vent to atmosphere vs recirc? Just because the rich comment?
 

QWIKSTRIKE

475rwhp459torq an climbin
Apr 3, 2005
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How abouyt shortening the life of the turbo. Better yet how about breaking your compressor wheel. I won't waste time explaining how this will happen, but rest assured it will eventually happen. In 2 words "back pressure"....where does it go after you boost, and the throttle plate is closed when you take your foot off the gas pedal?
 
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RazoE

Boobs/Boost, my favorite
Jun 13, 2006
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if you run a venting BOV on an AFM or similar system will result in rich conditions once the metered air is vented, but if you have a stand alone, or MAP set up you can vent without too many worries...

the stock bypass valve is recirculated, so you should do the same.

you can usually buy recirculating tips for your after market BOV, such as the SSQV, or Tials..
 

enjoi.this

Formerly ChrisC
Aug 18, 2008
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Im talking no by-pass or vented bov, and I did bring up the surge breaking compressor wheels but no one seemed too concerned about it. The big question is do high hp tuners not use bovs when they put together a setup?
 

QWIKSTRIKE

475rwhp459torq an climbin
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ChrisC;1359712 said:
Im talking no by-pass or vented bov, and I did bring up the surge breaking compressor wheels but no one seemed too concerned about it. The big question is do high hp tuners not use bovs when they put together a setup?

You obviously have money to burn on new turbos. What you want to do can be done, but why do it because drifters and the like do it. It can and will cause your turbo to fail earlier than intended. To continue the path without a BOV is sure destruction.

MKIII owners barely want to build motors properly, and now you want to be at odds with running a turbo without a BOV. Ask yourself are you willing to buy new turbos more frequently. If you want throttle response pick the right turbo compressor and exhaust wheels with the proper a/r and you will be far better off.

The blind leading the blind fits this topic. Soooo the biggest issue is a broken turbo, and you obviously are wanting to do this so just do it.:aigo::3d_frown::kickinthenuts:
 

Wills7MGTE

( . )( . )'s RULE!!!!
May 12, 2006
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This is the dumbest thread I've ever encountered, the idea is just terrible. Hey while your at it remove your intercooler cuz who needs the extra weight for it and the plumbing right??? LOL what the hell, quit hanging with ricers man they give bad bad bad advice.
 

Weeves

is here to learn
Oct 2, 2008
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Wills7MGTE;1359855 said:
quit hanging with ricers man they give bad bad bad advice.

qft

I rarely take advice from the local guys here, I just google and search on here for everything I need to know. Tons of knowledge and experienced people on this site, it's amazing.
 

Poodles

I play with fire
Jul 22, 2006
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Some of the high HP cars run without them, but it's very rare (think it was a Top Secret MKIV that was a track car)

Turbo death WILL occur, but on true race cars it's not an issue as they rebuild everything after the races anyway. On a street car you're fucking stupid not to run one...
 

enjoi.this

Formerly ChrisC
Aug 18, 2008
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Poodles;1359991 said:
Some of the high HP cars run without them, but it's very rare (think it was a Top Secret MKIV that was a track car)

Turbo death WILL occur, but on true race cars it's not an issue as they rebuild everything after the races anyway. On a street car you're fucking stupid not to run one...

Yesss that was the answer I was looking for, thanks poodles.

OK GUYS im not asking this because I want to do it, mearly trying to creat a discussion on this to gather good points to use when the local boys bring it up again. Read my post more carefully before blantly calling me stupid because you assume I want to remove my bov and intercooler... :nono:

Just because they think its right doesnt mean I do, cant exactly argue with ten other ricers/drifters without solid information.
 

)Law(

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Jun 27, 2009
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Argue with ricers yes, argue with dirfters maybe as they could be a combo of both. Stick with a bov and intercooler as every engine needs to breath even if it's a n/a or charged...
 

IJ.

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Mar 30, 2005
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)Law(;1360253 said:
Argue with ricers yes, argue with dirfters maybe as they could be a combo of both. Stick with a bov and intercooler as every engine needs to breath even if it's a n/a or charged...

Just WTF does that dribble mean? :nono:
WHY would an NA need an BoV or an IC?

Please take some time to arrange your thoughts into coherent sentences before blurting them out thanks...
 

dumbo

Supramania Contributor
Jul 16, 2008
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Zumtizzle;1360277 said:
The Stock Recirc Valve doesn't do jack anyway and 95% of these CT26's are still alive. lol

:wtf: Do you think Toyota pick something useless to cover there warranties? Or did they want to be replaceing turbo's???

This thread was FUBAR from the title on. If it aint a diesel, run a fucking BOV/BPV.
 

)Law(

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IJ.;1360264 said:
Just WTF does that dribble mean? :nono:
WHY would an NA need an BoV or an IC?

Please take some time to arrange your thoughts into coherent sentences before blurting them out thanks...

You miss construed what I was saying. I didn't mean that a n/a needs blow off valve and intercooler I just meant that all engines have to breath. Only charged engines need intercoolers and bov. Lol a n/a with intercooler and bov. Reminds me of a Honda I saw one with a fake intercooler kit rofl.....I could see how that could be misread though. My bad hehe
 

QWIKSTRIKE

475rwhp459torq an climbin
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ChrisC;1360247 said:
Yesss that was the answer I was looking for, thanks poodles.

OK GUYS im not asking this because I want to do it, mearly trying to creat a discussion on this to gather good points to use when the local boys bring it up again. Read my post more carefully before blantly calling me stupid because you assume I want to remove my bov and intercooler... :nono:

Just because they think its right doesnt mean I do, cant exactly argue with ten other ricers/drifters without solid information.

Well I basicly said everything except that some high tuners do this, and you needed more yet you are not a high tuner. You spaek contrary to what you are posting . To have an answer for lamers to me is a waste if it won't help you build your ride. Get a Honda!:naughty:
 

Enraged

A HG job took HOW long??
Mar 30, 2005
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I talked with nashman about this awhile back, he did some research and some turbo manufacturers state their turbos can handle the pressure surge from running no bov. Obviously it won't work on a CT26, but people should talk to actual turbo manufacturers before saying it is/is not ok to do...
 

Zumtizzle

Can't Wait to Be King.
Oct 21, 2006
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dumbo;1360287 said:
:wtf: Do you think Toyota pick something useless to cover there warranties? Or did they want to be replaceing turbo's???

This thread was FUBAR from the title on. If it aint a diesel, run a fucking BOV/BPV.

After a while that valve just stays open. ;)

So i stand corrected. It does bypass; just 100% of the time.
 
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