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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Forge DV with BMS DCI?



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      10-22-2010, 04:21 PM   #1
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Forge DV with BMS DCI?

Anyone have a video clip of their 335 with Forge diverter valves and BMS DCI? I'd like to hear the sound of it. I plan on getting Forge DV's but kind of affraid that they may be too loud.

How are they compare to the Tial BOV (sound wise)?
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      10-22-2010, 04:23 PM   #2
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Quote:
Originally Posted by Alfred View Post
Anyone have a video clip of their 335 with Forge diverter valves and BMS DCI? I'd like to hear the sound of it. I plan on getting Forge DV's but kind of affraid that they may be too loud.

How are they compare to the Tial BOV (sound wise)?
Im pretty sure Forge DV's are very quiet, but it all depends on your boost levels. I am also interested in hearing them, I cant really find any good videos on youtube.
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      10-22-2010, 04:56 PM   #3
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TialBOV is pretty quiet, but louder than the forge DV. The forge DV are not intrusive at all and sound pretty good
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      10-22-2010, 04:56 PM   #4
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Quote:
Originally Posted by gbreeE90 View Post
Im pretty sure Forge DV's are very quiet, but it all depends on your boost levels. I am also interested in hearing them, I cant really find any good videos on youtube.
I would assume so. But, I just want to be sure that they are not going to be super loud with the DCI
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      10-22-2010, 07:28 PM   #5
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They are Diverter Valves, they make zero noise. You realize they aren't sending the air to the atmosphere like a bov? They re-circulate the air back towards the turbo inlets. Mine make no noise at all. To be honest, you do DP's and then you will have some noise!
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      10-22-2010, 08:05 PM   #6
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Quote:
Originally Posted by forza1976 View Post
They are Diverter Valves, they make zero noise. You realize they aren't sending the air to the atmosphere like a bov? They re-circulate the air back towards the turbo inlets. Mine make no noise at all. To be honest, you do DP's and then you will have some noise!
I'm almost sure that they will make some noise if you don't have the stock air box. My forge diverter valve made some noise on my TT.
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      10-22-2010, 08:23 PM   #7
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Your really not going to hear Anything with diverted valves.
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      10-22-2010, 11:18 PM   #8
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Quote:
Originally Posted by forza1976 View Post
They are Diverter Valves, they make zero noise. You realize they aren't sending the air to the atmosphere like a bov? They re-circulate the air back towards the turbo inlets. Mine make no noise at all. To be honest, you do DP's and then you will have some noise!
Even the stock DVs make noise. It's more pronounced with DCI and running a lot of boost. When you let off the throttle, you'll hear a slight whoosh. If you drive with the cowl off, you'll hear it a lot more. Sensitive hearing also helps.
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      10-23-2010, 01:05 AM   #9
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I have forge DV with BMS DCI... it makes some noise, but i don't really like it. I will record a short clip for you later tonight....
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      10-23-2010, 07:00 AM   #10
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forge DV with BMS DCI definitely makes a whoosh..but definitely quieter than BOV...i feel like i hear it more with the windows up...I've never heard what it sounds like from the outside...
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      10-23-2010, 08:50 AM   #11
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Quote:
Originally Posted by turkish335 View Post
TialBOV is pretty quiet, but louder than the forge DV. The forge DV are not intrusive at all and sound pretty good
Do you have this setup?

Quote:
Originally Posted by NiVeDh View Post
Even the stock DVs make noise. It's more pronounced with DCI and running a lot of boost. When you let off the throttle, you'll hear a slight whoosh. If you drive with the cowl off, you'll hear it a lot more. Sensitive hearing also helps.
That is true. I hear more and more each day I drive my car.

Quote:
Originally Posted by cocoturkey View Post
I have forge DV with BMS DCI... it makes some noise, but i don't really like it. I will record a short clip for you later tonight....
I look forward to the clip

Quote:
Originally Posted by kang159 View Post
forge DV with BMS DCI definitely makes a whoosh..but definitely quieter than BOV...i feel like i hear it more with the windows up...I've never heard what it sounds like from the outside...
I hear more whoosh sound louder and louder everytime I drive my car and that I feel my car is not holding boost after 4-5K RPM. That's why I want to get Forge DV's thinking my stock ones are not good anymore.
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      10-23-2010, 09:40 AM   #12
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Quote:
Originally Posted by Alfred View Post
Do you have this setup?
had the forge dv, now have the Tial
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      10-23-2010, 10:34 AM   #13
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Quote:
Originally Posted by turkish335 View Post
had the forge dv, now have the Tial
The tial is much louder?
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      10-23-2010, 10:49 AM   #14
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tial is one of the quietest bovs on the market but its definately still a bov. If I were to compare, the DV's have a lower toned whoosh sound and the tial bov a slightly louder psshhhtt sound - sorry not very scientific but you can search for videos on youtube to compare the sound.
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      10-23-2010, 04:51 PM   #15
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here is the clip i promised earlier...

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      10-23-2010, 04:53 PM   #16
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Quote:
Originally Posted by cocoturkey View Post
here is the clip i promised earlier...

Watching that video, I realized my turbos whine more than yours and I just have a DCI. Hope they arent going out
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      12-04-2010, 07:54 PM   #17
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Quote:
Originally Posted by cocoturkey View Post
here is the clip i promised earlier...

Dude y do your gas and oil needles jump up and down like that every time u hit the gas..seems like u have a malfuntion with ur instrument cluster there
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      12-04-2010, 07:57 PM   #18
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Originally Posted by tibra1 View Post
Dude y do your gas and oil needles jump up and down like that every time u hit the gas..seems like u have a malfuntion with ur instrument cluster there
It's a PROcede feature. Fuel gauge = boost gauge; Oil temperature gauge = AFR.
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      12-04-2010, 08:34 PM   #19
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DVs + DCI don't make any BOV type noise. The only thing you'll hear is the suction noise from the DCI.
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      12-04-2010, 11:19 PM   #20
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Quote:
Originally Posted by themyst View Post
DVs + DCI don't make any BOV type noise. The only thing you'll hear is the suction noise from the DCI.
If you listen carefully in the vid you can hear the slight whoosh, I have the forge DV's and although not as loud as a BOV when the DV's release the air to recirculate you can hear it.
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      12-04-2010, 11:35 PM   #21
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Quote:
Originally Posted by themyst View Post
DVs + DCI don't make any BOV type noise. The only thing you'll hear is the suction noise from the DCI.
This is incorrect.
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      12-05-2010, 08:57 AM   #22
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Quote:
Originally Posted by ErvGotti View Post
.... the forge DV's and although not as loud as a BOV when the DV's release the air to recirculate you can hear it.
true
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