Stock BMW BOV

AndreM818 · 12-04-2009, 02:46 AM

Hey Guys,

Ok I got a 2007 335i coupe about a week ago, and the next day I took off the hose to the stock blow off valve and I was wondering if this is a bad thing or a good thing. I love the noise it makes when i shift gears but my main concern is if it will mess my engine up. Oh and my car is automatic if it makes a difference.

Thanks.

lpphreakx06 · 12-04-2009, 03:00 AM

I'm unsure which hose you are referring too but put it back.
We don't have BOV's either.

enrita · 12-04-2009, 03:03 AM

those are called Diverter valves and you better plug it back in .

Terrance28 · 12-04-2009, 03:13 AM

As long as you plug the ends on the intake pipe it shouldn't hurt anything.

migue90 · 12-04-2009, 10:02 AM

Quote:

Originally Posted by Terrance28

As long as you plug the ends on the intake pipe it shouldn't hurt anything.

correct

bryans2k · 12-04-2009, 10:23 AM

Actually it will make your car run slightly more rich in-between shifts since the fuel mapping is putting more fuel in to make up for that extra air that is now vented. It won't hurt anything but it does have an affect none the less.

migue90 · 12-04-2009, 10:53 AM

Quote:

Originally Posted by bryans2k

Actually it will make your car run slightly more rich in-between shifts since the fuel mapping is putting more fuel in to make up for that extra air that is now vented. It won't hurt anything but it does have an affect none the less.

actually n54 uses a MAP sensor which measures the air after the diverters(or BOV.... depends on what you have)..... the only effect venting atmosphere would have is if recirculating the vent somehow spooled the turbo between shifts reducing any possible lag ..... but we have small turbos so lag isnt an issue past 2K.... so no effect........ car with MAF would have a problem being that the air is measured then compressed through the turbo and since vent occurs after turbo the vent would then have to be recirculated..... or modified to account for vent

Terrance28 · 12-04-2009, 11:19 AM

Quote:

Originally Posted by bryans2k

Actually it will make your car run slightly more rich in-between shifts since the fuel mapping is putting more fuel in to make up for that extra air that is now vented. It won't hurt anything but it does have an affect none the less.

Where is the facepalm smilie, nevermind this will do

migue90 · 12-04-2009, 11:20 AM

migue90 · 12-04-2009, 11:21 AM

i am right though? .... right?

Terrance28 · 12-04-2009, 11:22 AM

Quote:

Originally Posted by migue90

i am right though? .... right?

+1 yes you are right.

BaMBaM4002 · 12-04-2009, 03:52 PM

so..did you unplug it specifically to see if a sound can be made in between shifts ? lol

12-04-2009, 02:46 AM	#1
AndreM818 Stealth Bomber 43 Rep 564 Posts Drives: this ^ Join Date: Dec 2009 Location: SoCal iTrader: (3)	Stock BMW BOV Hey Guys, Ok I got a 2007 335i coupe about a week ago, and the next day I took off the hose to the stock blow off valve and I was wondering if this is a bad thing or a good thing. I love the noise it makes when i shift gears but my main concern is if it will mess my engine up. Oh and my car is automatic if it makes a difference. Thanks.
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12-04-2009, 03:00 AM	#2
lpphreakx06 Professional Moose Racer 325 Rep 7,509 Posts Drives: SG 335i E92 RIP + 2015 SS M3 Join Date: Jul 2008 Location: Bellevue, Wa iTrader: (25)	I'm unsure which hose you are referring too but put it back. We don't have BOV's either. __________________ Visit my blog anytime: http://www.sfpayments.com BMW Dream Team PNW Chapter, member #1 \|HP Autowerks \| AR DESIGN \| BMW PERFORMANCE \| STOP TECH \| Volk Racing\| AMS \| ARKYM
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12-04-2009, 03:03 AM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	those are called Diverter valves and you better plug it back in . __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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12-04-2009, 03:13 AM	#4
Terrance28 Brigadier General 114 Rep 3,334 Posts Drives: Crimson Red E92 Join Date: Nov 2007 Location: Killeen, TX iTrader: (17)	As long as you plug the ends on the intake pipe it shouldn't hurt anything. __________________ Mods list got too long, lets just say more than enough.
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12-04-2009, 10:23 AM	#6
bryans2k Private First Class 8 Rep 123 Posts Drives: beamer Join Date: May 2009 Location: bummerville,tx iTrader: (1)	Actually it will make your car run slightly more rich in-between shifts since the fuel mapping is putting more fuel in to make up for that extra air that is now vented. It won't hurt anything but it does have an affect none the less.
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12-04-2009, 11:20 AM	#9
migue90 Second Lieutenant 7 Rep 200 Posts Drives: 07 335i Join Date: Aug 2009 Location: N E W Jerz iTrader: (2)	__________________ stockeroni and cheese?
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12-04-2009, 11:21 AM	#10
migue90 Second Lieutenant 7 Rep 200 Posts Drives: 07 335i Join Date: Aug 2009 Location: N E W Jerz iTrader: (2)	i am right though? .... right? __________________ stockeroni and cheese?
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12-04-2009, 03:52 PM	#12
BaMBaM4002 Lieutenant 11 Rep 569 Posts Drives: 2007 E92 6sp -BSM/Coral Join Date: Aug 2009 Location: Aliso Viejo, CA iTrader: (9)	so..did you unplug it specifically to see if a sound can be made in between shifts ? lol
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