|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
335i Free BOV DIY
|
|
09-23-2009, 05:07 PM | #177 |
Second Lieutenant
42
Rep 256
Posts |
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, 02:12 PM | #178 |
1ST CLASS AWMSPORT
74
Rep 789
Posts
Drives: 13' 328 MSPORT
Join Date: Sep 2006
Location: South Fla
|
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, 03:43 PM | #179 |
Second Lieutenant
19
Rep 203
Posts |
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
|
11-19-2009, 10:32 PM | #180 |
Second Lieutenant
38
Rep 215
Posts |
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
|
12-30-2009, 09:02 PM | #182 |
Lieutenant Colonel
92
Rep 1,793
Posts |
|
Appreciate
0
|
01-30-2010, 08:34 PM | #183 |
Banned
127
Rep 245
Posts |
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
|
05-17-2010, 10:40 PM | #186 | |
First Lieutenant
13
Rep 313
Posts |
Quote:
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
|
05-19-2010, 05:01 PM | #188 |
First Lieutenant
13
Rep 313
Posts |
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, 09:30 AM | #189 |
FREE DREAMK
162
Rep 9,321
Posts
Drives: the shiiit!
Join Date: Aug 2009
Location: Vineland, NJ
|
It's right behind the air box. Much easir if you take the cowel off
__________________
|
Appreciate
0
|
06-05-2010, 02:51 PM | #190 | |
Mad tyte EuR0 style boooi <--- Joke
211
Rep 2,472
Posts |
Quote:
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, 03:31 PM | #191 |
Captain
60
Rep 621
Posts |
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, 07:44 AM | #192 |
Private First Class
9
Rep 158
Posts |
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
|
07-11-2010, 03:33 PM | #195 |
Lieutenant
26
Rep 438
Posts |
I posted pics of my install here
http://www.e90post.com/forums/showthread.php?t=407126 |
Appreciate
0
|
08-25-2010, 01:14 PM | #197 |
Second Lieutenant
33
Rep 217
Posts |
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, 08:58 PM | #198 |
Private First Class
16
Rep 134
Posts |
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
|
Bookmarks |
Thread Tools | Search this Thread |
|
|