E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > 335i Free BOV DIY



Reply
 
Thread Tools Search this Thread
      09-23-2009, 06:07 PM   #177
zke36
Second Lieutenant
zke36's Avatar
United_States
19
Rep
256
Posts

Drives: '07 Montego 335
Join Date: Sep 2009
Location: Bethesda, MD

iTrader: (1)

not that im a tech, but from what i understand when the Diverter re-routes the air into the intake for the fraction of a second that it does, all that it accomplishes is relieves some of the vacuum pressure the engine is putting on the intake for that fraction of a second. Then the engine goes back to working as hard as it has been through the rev range to intake air.

So, correct me if im wrong, but by re-routing to atmosphere all we are doing here is not giving the engine/intake a little boost/break from vacuum pressure for a fraction of a second. I doubt this greatly hinders performance on a 300hp TT car.

So its noise vs. a very small fraction of a second faster (if anything)
Appreciate 0
      09-26-2009, 03:12 PM   #178
AWMSPORT
1ST CLASS AWMSPORT
AWMSPORT's Avatar
United_States
13
Rep
784
Posts

Drives: 13' 328 MSPORT
Join Date: Sep 2006
Location: South Fla

iTrader: (0)

Garage List
Great Wrightup

Ive had this mod done for about a year now, and even at low RPM's you can hear them spool up and blow off- , one of my Favorite/ Cheapest Mods!!
__________________
'13 328i MSport, AW, Black Dakota leather, Premium Pkg, xenons, ///M Perf, side skirts,Front Lip, Fully coded, CF roundels, Matt Black Grillz, Painted reflectors (front & rear) Smoked tail lights, Plazma l.E.D White PY27W front turn signal,trunk spoiler, Matt Black roof, 8K D1S HID,Custom Exhaust,!
Soon:
JB4,DP,H&R sports,rear diff,!
Appreciate 0
      11-09-2009, 05:43 PM   #179
pc4400
Second Lieutenant
pc4400's Avatar
4
Rep
203
Posts

Drives: 335i
Join Date: Oct 2009
Location: SoCal

iTrader: (0)

I'm no expert but I do have a comment on this;

I came from a subaru so Im familiar with BOV's, more importantly the need not to use them. BOV's really are pointless unless you're swapping out for larger turbos.
But more importantly, the were issues with cars (subarus) with BOVs (atmospheric, not recirculating) cause the car to run rich momentarily slightly hindering performance. No known aftermarket remapping ever solved this problem. Most of the kids that put these units on didn't really care about the performance just sound. I couldn't imagine doing this to this car (335i). With so many fancy sensors and an iffy HPFP, why risk it?

Just thought I could give a little comment based on what I've learned.
Thanks
Appreciate 0
      11-20-2009, 12:32 AM   #180
Philritter21
Second Lieutenant
Philritter21's Avatar
United_States
18
Rep
214
Posts

Drives: MR E90 M3
Join Date: Nov 2006
Location: Midwest

iTrader: (0)

Ok, I can say that after several months of running my car like this, there were no apparent ill mechanical effects, BUT it sprays oil all over the engine compartment. It makes a mess.
__________________
Melbourne Red E90 M3 - E39 540i

The original user of the animated Bert and Ernie avatar. Except no substitutes.
Appreciate 0
      11-20-2009, 09:42 AM   #181
jaxxx
Second Lieutenant
jaxxx's Avatar
10
Rep
258
Posts

Drives: 335i coupe
Join Date: Jul 2008
Location: usa

iTrader: (0)

nice
Appreciate 0
      12-30-2009, 11:02 PM   #182
bimmertt
Lieutenant Colonel
bimmertt's Avatar
38
Rep
1,710
Posts

Drives: 2007 e92 335i
Join Date: Nov 2008
Location: Earth

iTrader: (7)

Quote:
Originally Posted by Philritter21 View Post
Ok, I can say that after several months of running my car like this, there were no apparent ill mechanical effects, BUT it sprays oil all over the engine compartment. It makes a mess.
is this true of all BOVs or just if you use the stock dvs?
Appreciate 0
      01-30-2010, 10:34 PM   #183
chris@strutmonkey
chris@strutmonkey's Avatar
United_States
13
Rep
178
Posts

Drives: 2007 BMW 335i
Join Date: Dec 2009
Location: Fredericksburg, VA

iTrader: (0)

Lots of talk on this by people who are really just guessing. BMW bypass vales recirculate into intake tract for one main reason: so there is no blow off noise.

Pulling off the hose and plugging the intake gives you the noise BMW and other car makers engineer out. There is no significant negative effects of this mod.

There is a slight one: BMW has calibrated the a/f on these cars to very tight tolerances. If you do the mod, your car will run slightly rich for a split second after shifting. On Audis, it would actually trigger an engine check light, but I've never heard of this happening on BMWs.

One solution would be to cut the hose and add a plastic T, so that you have the noise and still some recirculation.
Appreciate 0
      03-19-2010, 10:14 PM   #184
Bcruskie
Private First Class
1
Rep
129
Posts

Drives: 2007 e92
Join Date: Mar 2010
Location: Vancouver BC

iTrader: (2)

this is so confusing! can someone post some pictures for process ?
Appreciate 0
      04-21-2010, 02:01 PM   #185
burningchicken
Lieutenant
burningchicken's Avatar
12
Rep
429
Posts

Drives: 2007 e90 335i
Join Date: Jan 2010
Location: noVA, Virginia Tech

iTrader: (5)

Quote:
Originally Posted by Bcruskie View Post
this is so confusing! can someone post some pictures for process ?
+1
Appreciate 0
      05-17-2010, 11:40 PM   #186
RUS0628
First Lieutenant
RUS0628's Avatar
Russian Federation
7
Rep
313
Posts

Drives: e92 335
Join Date: Sep 2009
Location: SF Bay Area

iTrader: (3)

Quote:
Originally Posted by Bcruskie View Post
this is so confusing! can someone post some pictures for process ?
+ 1
I really wanna do this. Is there a video clip of the sound???
__________________
BSM e92 335i
JB3|5% Tint|Matte Grills|H&R Sport|230's
Appreciate 0
      05-18-2010, 12:00 AM   #187
burningchicken
Lieutenant
burningchicken's Avatar
12
Rep
429
Posts

Drives: 2007 e90 335i
Join Date: Jan 2010
Location: noVA, Virginia Tech

iTrader: (5)

Quote:
Originally Posted by RUS0628 View Post
+ 1
I really wanna do this. Is there a video clip of the sound???
there is one on page 2 i believe. or 3
Appreciate 0
      05-19-2010, 06:01 PM   #188
RUS0628
First Lieutenant
RUS0628's Avatar
Russian Federation
7
Rep
313
Posts

Drives: e92 335
Join Date: Sep 2009
Location: SF Bay Area

iTrader: (3)

Quote:
Originally Posted by burningchicken View Post
there is one on page 2 i believe. or 3
Yea I saw it. It sounds nice.
Does anyone has a picture of that 2nd hose that needs to be unplugged?
__________________
BSM e92 335i
JB3|5% Tint|Matte Grills|H&R Sport|230's
Appreciate 0
      05-21-2010, 10:30 AM   #189
KyLu II
FREE DREAMK
KyLu II's Avatar
Dominican Republic
117
Rep
9,316
Posts

Drives: the shiiit!
Join Date: Aug 2009
Location: Vineland, NJ

iTrader: (6)

Garage List
2011 Lexus LFA  [1.88]
Quote:
Originally Posted by RUS0628 View Post
Yea I saw it. It sounds nice.
Does anyone has a picture of that 2nd hose that needs to be unplugged?
It's right behind the air box. Much easir if you take the cowel off
__________________
Appreciate 0
      06-05-2010, 03:51 PM   #190
Alexander
Mad tyte EuR0 style boooi <--- Joke
Alexander's Avatar
United_States
94
Rep
2,472
Posts

Drives: E30, E85, MKVI
Join Date: Nov 2009
Location: Deal's Gap

iTrader: (0)

Quote:
Originally Posted by KyLu II View Post
It's right behind the air box. Much easir if you take the cowel off
I just took the entire cowl and air box out.

I cannot hear mine!!!! At all!!! WTF.

I did it correctly and my plugs are tight. I'm kind of pissed, because I spent a lot of time on this with the cowl removal.
Appreciate 0
      06-15-2010, 04:31 PM   #191
prelude2perfect
Lieutenant
19
Rep
537
Posts

Drives: 2007 335i Sedan
Join Date: Apr 2010
Location: Tacoma

iTrader: (8)

Just got done with this and I'm pretty happy with it. Not as loud as was hoping for but then again it isn't obnoxious which is great. You should definately be able to hear this if you did it correctly.

I did the electrical tape over the bung then screwed a plastic oil cap over it and taped over that just to be sure. I also pointed the hoses downwards in the bay to avoid getting oil over anything
Appreciate 0
      06-23-2010, 08:44 AM   #192
ZombiE90
Private First Class
ZombiE90's Avatar
United_States
2
Rep
156
Posts

Drives: 335d
Join Date: Jun 2010
Location: Texas

iTrader: (2)

Garage List
2011 BMW 335d  [0.00]
If someone decided to online and buy a legit BOV like a Tial or HKS (not AA, they're too proud of their product), what would be the cheapest place to get it?
__________________

Current: 2011 335d | M-Sport | Mostly Stock
RIP: 2007 E92 335i | Dinan Stage 2
Appreciate 0
      06-24-2010, 10:06 PM   #193
mac335
New Member
0
Rep
16
Posts

Drives: 07 335i
Join Date: Jun 2010
Location: Chicago IL

iTrader: (0)

can you put more pics about this mod
Appreciate 0
      07-07-2010, 09:26 PM   #194
burningchicken
Lieutenant
burningchicken's Avatar
12
Rep
429
Posts

Drives: 2007 e90 335i
Join Date: Jan 2010
Location: noVA, Virginia Tech

iTrader: (5)

Can someone post a picture of the plug secured in place?
Appreciate 0
      07-11-2010, 04:33 PM   #195
burningchicken
Lieutenant
burningchicken's Avatar
12
Rep
429
Posts

Drives: 2007 e90 335i
Join Date: Jan 2010
Location: noVA, Virginia Tech

iTrader: (5)

I posted pics of my install here
http://www.e90post.com/forums/showthread.php?t=407126
Appreciate 0
      08-01-2010, 07:05 AM   #196
Arnold_Powers
Arnold_Powers
Arnold_Powers's Avatar
United_States
47
Rep
1,022
Posts

Drives: BSM F82 M4
Join Date: May 2010
Location: Los Angeles

iTrader: (6)

the tech at my local dealer even told me to do this. LOL i just used some plugs .. sounds sick with intake, jb+ and muffler cut. i like it
Appreciate 0
      08-25-2010, 02:14 PM   #197
SPGspeed
Second Lieutenant
SPGspeed's Avatar
United_States
16
Rep
205
Posts

Drives: 2008 M3 E92
Join Date: Aug 2010
Location: ct

iTrader: (3)

I got my BMI DCI in the mail yesterday... so while i had the hood up did this mod.. its perfect jut enough noise so its not a ricer RFL BOV. Sounds great coupled to the DCI, you should hear it at 6500K when shifting!
__________________
Garage:

Waiting: 2016 340i Estoril Blue
Sold: 2008 e92 M3 Jerez Black
Sold: 2007 e90 335i Saphire Black
Appreciate 0
      11-19-2010, 10:58 PM   #198
nestillo335i
Private First Class
Puerto Rico
6
Rep
136
Posts

Drives: E90 335i
Join Date: Apr 2008
Location: Mayaguez PR

iTrader: (5)

FYI: Did this mod like 2 months ago, car running perfect and I love the sound and the price LOL
__________________
2008 Jet Black E92 SOLD
2007 SG E90 Stock
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 12:19 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST