why do i see bov's on either side of motor? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

HellaSexyS13 · 08-16-2011, 01:46 PM

does it matter which side of the intercooler piping you have your bov on? looking through pics i see people have it on the intake manifold pipe and some on the pipe going to the turbo? does it make a difference/benefit of doing one or the other?

codyace · 08-16-2011, 02:35 PM

Pro's and cons of both setups, yet neither really has proven (In my experience, or in reading forum folklore) to hurt performance in either location.

SLiDe_WaYz · 08-16-2011, 02:47 PM

If I'm not mistaken, the guys who put there bov on the intake side are using a stand alone with a map sensor, so the bov doesn't need to be recirculated.

And the ones that have it on the hot pipe have the bov recirculated to the intake since there using the stock maf. Correct me if I'm wrong.

codyace · 08-16-2011, 03:31 PM

Quote:

Originally Posted by SLiDe_WaYz

If I'm not mistaken, the guys who put there bov on the intake side are using a stand alone with a map sensor, so the bov doesn't need to be recirculated.

And the ones that have it on the hot pipe have the bov recirculated to the intake since there using the stock maf. Correct me if I'm wrong.

He's talking abotu hot or cold pipe, not before or after the turbo.

BOV before turbo wouldn't make any difference at all for sure.

SLiDe_WaYz · 08-16-2011, 03:54 PM

I was talking about the hot and cold pipe. Atleast that's what I thought am I wrong ? Serious question.

theboy · 08-16-2011, 04:06 PM

location doesnt matter. If your running a maf setup, you need to recirculate it back to the intake for the turbo (usually after the maf). But if youve made the change to a map sensor then it doesnt matter if its recirculated or not. So depending on what setup you have, dictates where you should located the bov. Usually to cut down on hoses people located the bov, for maf cars, near the turbo intake. Thus creating a cleaner look and a better reading (less hose to travel through). Hope this clears up what these 2 are saying.

08-16-2011, 01:46 PM	#1
HellaSexyS13 Zilvia Addict Join Date: Oct 2010 Location: New Jersey Age: 33 Posts: 709 Trader Rating: (14) Feedback Score: 14 reviews	why do i see bov's on either side of motor? does it matter which side of the intercooler piping you have your bov on? looking through pics i see people have it on the intake manifold pipe and some on the pipe going to the turbo? does it make a difference/benefit of doing one or the other?

08-16-2011, 02:35 PM	#2
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Pro's and cons of both setups, yet neither really has proven (In my experience, or in reading forum folklore) to hurt performance in either location. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

08-16-2011, 02:47 PM	#3
SLiDe_WaYz Zilvia FREAK! Join Date: May 2011 Location: Texas Age: 31 Posts: 1,282 Trader Rating: (6) Feedback Score: 6 reviews	If I'm not mistaken, the guys who put there bov on the intake side are using a stand alone with a map sensor, so the bov doesn't need to be recirculated. And the ones that have it on the hot pipe have the bov recirculated to the intake since there using the stock maf. Correct me if I'm wrong. __________________

08-16-2011, 03:54 PM	#5
SLiDe_WaYz Zilvia FREAK! Join Date: May 2011 Location: Texas Age: 31 Posts: 1,282 Trader Rating: (6) Feedback Score: 6 reviews	I was talking about the hot and cold pipe. Atleast that's what I thought am I wrong ? Serious question. __________________

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08-16-2011, 04:06 PM	#6
theboy Zilvia Addict Join Date: Apr 2010 Location: Chicago Age: 32 Posts: 618 Trader Rating: (10) Feedback Score: 10 reviews	location doesnt matter. If your running a maf setup, you need to recirculate it back to the intake for the turbo (usually after the maf). But if youve made the change to a map sensor then it doesnt matter if its recirculated or not. So depending on what setup you have, dictates where you should located the bov. Usually to cut down on hoses people located the bov, for maf cars, near the turbo intake. Thus creating a cleaner look and a better reading (less hose to travel through). Hope this clears up what these 2 are saying.