How safe are BOV's on 335i or 335XI???

turbolover · 08-17-2011, 02:59 PM

I have a HKS ssq blow of valve, I was going to install it my STi but didn't because STi's required a tune for it so the car can run smoothly.

I have a 08 335xi 6 speed manual, and want to buy a charge pipe and install this BOV, will it make my car run funny w/o being tuned? btw my car is a 100% stock. I just miss having that whooshing sound......I know its the ricer in me LOL!

Please gimme feedback

EngineCo52 · 08-17-2011, 03:08 PM

once you have that sounds, it sucks not hearing it anymore

idk though i have a N52 motor lol

Coolieman1220 · 08-17-2011, 03:20 PM

isn't a BOV installed to protect your engine? well Turbo from back pressure. so isn't that a good thing? like a waste gate?

turbolover · 08-17-2011, 03:36 PM

Quote:

Originally Posted by Coolieman1220

isn't a BOV installed to protect your engine? well Turbo from back pressure. so isn't that a good thing? like a waste gate?

No waste gates and blow off valves are 2 different things.....the Bov can be recirculating or blow through (realeases turbo charge air into the atmosphere) thus making the loud "whoooosh" sound.

Coolieman1220 · 08-17-2011, 08:03 PM

Quote:

Originally Posted by oman350

No waste gates and blow off valves are 2 different things.....the Bov can be recirculating or blow through (realeases turbo charge air into the atmosphere) thus making the loud "whoooosh" sound.

yes you are correct. my bad. i see where i messed up.

asrautox · 08-17-2011, 09:42 PM

I believe STI's need to tune for BOV's because they use a MAF based system that reintroduces bypassed air that has already been metered by the MAF. Since N54's use a MAP system, a custom tune isn't required for BOV use..

lamia2super · 08-17-2011, 09:47 PM

The car already has a 2 BOV type things that release the pressure back into the charge pipe. If you want just unplug the diverter hoses and put a plug on the chsrgepipe and you got your woosh noise

Focus · 08-17-2011, 10:04 PM

Very Safe.

See this thread for how it sounds on our car.

http://www.e90post.com/forums/showthread.php?t=571537

EJ_3 · 08-18-2011, 06:15 AM

You'll be fine, and it'll get even louder once tuned.

kdiggz · 08-18-2011, 06:57 AM

i wouldn't do it. did u see in fast and furious when the floor boards fell right out of the car?! i'm guessing something like that might happen from all of that crazy POWER

turbolover · 08-19-2011, 01:07 PM

Quote:

Originally Posted by kdiggz

i wouldn't do it. did u see in fast and furious when the floor boards fell right out of the car?! i'm guessing something like that might happen from all of that crazy POWER

You got a point, thats it Im selling all cars and buying bicycles!

Zeph · 08-20-2011, 01:24 PM

no damage or problems with BOV or DV's, as long as they don't leak and work properly. You can choose to re-use hot air or get rid of it. I prefer to get rid of it (and a little bit of oil too, as I have noticed on the underside of my hood lol... and yes, I have an OCC as well).

Zeph

Spoolin1 · 08-20-2011, 11:33 PM

Can you really just pull the recirc tubes off the front of the stock bov's and let then breathe to atmosphere? And of course, cap the intake pipe holes. What do the stock bov's sound like. I have a Tial 50 bov on my 800 whp Honda s2000 and I love the sound of having a bov. I just didn't think it would be wise to do it on the 335i because of emissions and may throw a code or something.

s2k_335i · 08-20-2011, 11:40 PM

Some members reported that the CP pop off but I have experienced it.

EJ_3 · 08-21-2011, 06:52 AM

Quote:

Originally Posted by s2k_335i

Some members reported that the CP pop off but I have experienced it.

Mines popped off after the first test drive after installation... it was clearly my fault (clamp wasn't on tight enough where it connects to the elbow to the intercooler piping

). After I made it home, I put it back in place and tighten it as much as possible. Haven't had a problem yet, and it's been months.

Toda Party · 03-28-2013, 02:15 AM

Quote:

Originally Posted by kdiggz

i wouldn't do it. did u see in fast and furious when the floor boards fell right out of the car?! i'm guessing something like that might happen from all of that crazy POWER

I KNOW it's an old post but I just had to bump this because no one appreciated this haha.

AK 335i · 03-28-2013, 06:35 AM

Jeff@TopGearSolutions · 03-28-2013, 10:28 AM

You dont need any tuning for this vehicle to have a BOV.

We offer Evolution Racewerks or ETS Charge Pipes which can utilize your HKS Bov. Just use the options menu to select HKS Flange. Any questions, let me know.

-Edit, Wow, Old thread revival?

iknowitsfast · 08-10-2013, 12:15 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

You dont need any tuning for this vehicle to have a BOV.

We offer Evolution Racewerks or ETS Charge Pipes which can utilize your HKS Bov. Just use the options menu to select HKS Flange. Any questions, let me know.

-Edit, Wow, Old thread revival?

I'm interested in this. I actually like the HKS high pitch sound. I dont really need anymore power. I'm more concerned if the BOV and charge pipe can be removed quickly and reverted back to stock if I have to take it to the shop. (extended warranty)

135Pats · 08-10-2013, 12:44 PM

Quote:

Originally Posted by iknowitsfast

I'm interested in this. I actually like the HKS high pitch sound. I dont really need anymore power. I'm more concerned if the BOV and charge pipe can be removed quickly and reverted back to stock if I have to take it to the shop. (extended warranty)

Yes. Chargepipe takes some time the first go, but once you know the steps it's very simple.

08-17-2011, 02:59 PM	#1
turbolover Private 16 Rep 84 Posts Drives: '08 335XI 6 Speed Manual Join Date: Jul 2011 Location: Oregon iTrader: (0)	How safe are BOV's on 335i or 335XI??? I have a HKS ssq blow of valve, I was going to install it my STi but didn't because STi's required a tune for it so the car can run smoothly. I have a 08 335xi 6 speed manual, and want to buy a charge pipe and install this BOV, will it make my car run funny w/o being tuned? btw my car is a 100% stock. I just miss having that whooshing sound......I know its the ricer in me LOL! Please gimme feedback __________________ *2008 335xi 2 door 6 speed manual!!!!*
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08-17-2011, 03:08 PM	#2
EngineCo52 Major 60 Rep 1,457 Posts Drives: 2007 Montego 328xi CPE Join Date: May 2011 Location: Havre de Grace, MD iTrader: (2)	once you have that sounds, it sucks not hearing it anymore idk though i have a N52 motor lol __________________ E92 328xi Mods-KW V1-BMW Performance Exhaust-Matte Black Grill-CF Mirror Covers-CF B-Pillars-20% Tint-Coming soon:AG M310's, M3 Rep Front, Black Roof, Vinyl Window Trim E9x Picture Game-8 Points-Roundabout, Something Remarkable(stack of 50 g's), Cruise Memorabilia, Dirt Road w/ Trees, Michael Jackson, Police Station ,Dress-Up Funny, TPMS
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08-17-2011, 03:20 PM	#3
Coolieman1220 Banned 73 Rep 1,770 Posts Drives: 2010 335d Join Date: Jul 2010 Location: New York City iTrader: (0)	isn't a BOV installed to protect your engine? well Turbo from back pressure. so isn't that a good thing? like a waste gate?
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08-17-2011, 09:42 PM	#6
asrautox Private First Class 19 Rep 151 Posts Drives: 2011 335xi Join Date: Jun 2011 Location: LA iTrader: (0)	I believe STI's need to tune for BOV's because they use a MAF based system that reintroduces bypassed air that has already been metered by the MAF. Since N54's use a MAP system, a custom tune isn't required for BOV use..
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08-17-2011, 09:47 PM	#7
lamia2super Colonel 142 Rep 2,661 Posts Drives: 335i Join Date: May 2008 Location: Miami Beach, FL iTrader: (4) Garage List 2007 335i [10.00]	The car already has a 2 BOV type things that release the pressure back into the charge pipe. If you want just unplug the diverter hoses and put a plug on the chsrgepipe and you got your woosh noise __________________ FOR SALE https://www.e90post.com/forums/showt...0#post25342440
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08-17-2011, 10:04 PM	#8
Focus Captain 68 Rep 942 Posts Drives: N/A Join Date: Apr 2010 Location: Jersey iTrader: (2)	Very Safe. See this thread for how it sounds on our car. http://www.e90post.com/forums/showthread.php?t=571537 __________________
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08-18-2011, 06:15 AM	#9
EJ_3 Colonel 371 Rep 2,838 Posts Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: N Las Vegas iTrader: (13) Garage List 2007 BMW 335i [8.34] 2016 Ram 1500 Sport [8.00] 1994 BMW 525i [10.00] 2007 BMW 530i [8.66]	You'll be fine, and it'll get even louder once tuned.
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08-18-2011, 06:57 AM	#10
kdiggz Captain 20 Rep 659 Posts Drives: e92 ///M3 Join Date: Jan 2010 Location: Buffalo, NY iTrader: (10)	i wouldn't do it. did u see in fast and furious when the floor boards fell right out of the car?! i'm guessing something like that might happen from all of that crazy POWER
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08-20-2011, 01:24 PM	#12
Zeph Major 27 Rep 1,410 Posts Drives: 2008 E92 335i 6MT SGM CR/BD Join Date: Jul 2008 Location: Southeast USA iTrader: (0)	no damage or problems with BOV or DV's, as long as they don't leak and work properly. You can choose to re-use hot air or get rid of it. I prefer to get rid of it (and a little bit of oil too, as I have noticed on the underside of my hood lol... and yes, I have an OCC as well). Zeph
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08-20-2011, 11:33 PM	#13
Spoolin1 First Lieutenant 60 Rep 333 Posts Drives: 2011 E92 ZCP Join Date: Dec 2010 Location: Sellersburg, IN iTrader: (1)	Can you really just pull the recirc tubes off the front of the stock bov's and let then breathe to atmosphere? And of course, cap the intake pipe holes. What do the stock bov's sound like. I have a Tial 50 bov on my 800 whp Honda s2000 and I love the sound of having a bov. I just didn't think it would be wise to do it on the 335i because of emissions and may throw a code or something.
	Appreciate 0 Quote

08-20-2011, 11:40 PM	#14
s2k_335i This is it!! 15 Rep 672 Posts Drives: FBO 335i without meth Join Date: Jul 2010 Location: Land of Freedom iTrader: (1)	Some members reported that the CP pop off but I have experienced it. __________________ DFW, TX. Current: 08' Cayenne GTS, 14' Boxster S, 12' CBR 1000', 04' Bayliner 2556 Sold: 2010 A4, 2008 335i, 2007 335i, 2006 M3, 2006 S2000, 1990 NSX, 1991 300zx, 1992 Supra, 1996 Prelude, 1981 CRX, 1980 Mustang.
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03-28-2013, 06:35 AM	#17
AK 335i Major 48 Rep 1,290 Posts Drives: black 335i E90 Join Date: Sep 2012 Location: boynton beach iTrader: (0)
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03-28-2013, 10:28 AM	#18
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	You dont need any tuning for this vehicle to have a BOV. We offer Evolution Racewerks or ETS Charge Pipes which can utilize your HKS Bov. Just use the options menu to select HKS Flange. Any questions, let me know. -Edit, Wow, Old thread revival?
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