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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's Backward?



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      12-05-2009, 04:29 PM   #1
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Forge DV's Backward?

so i was just wasting time as usual and came across a post that has the DV's put the opposite way as i do on the car. I have had them on for about 6 weeks now and havent noticed any problems or CEL/SES issues. assuming i do have them in backward, did i do any harm to the car? im gonna go take a picture now and throw it up. oh and they are on a steet pipe.
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      12-05-2009, 07:10 PM   #2
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wow 37 views and no reply, i guess im the only one who runs these DV on my car?
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      12-05-2009, 07:24 PM   #3
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Quote:
Originally Posted by Cyruz View Post
wow 37 views and no reply, i guess im the only one who runs these DV on my car?
You might be the only one having them installed like this. Well, they will open and close for sure but no idea about side-effects here.
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      12-05-2009, 07:38 PM   #4
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What makes you say they are backwards? They look normal to me.
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      12-05-2009, 07:39 PM   #5
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so then they are reversed. i wasnt sure. i got them used and the steet pipe came with directions for the BOV not DV. i wanted to confirm that they are backwards before it go digging again in the engine.
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      12-05-2009, 07:40 PM   #6
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Quote:
Originally Posted by happy4nk8er View Post
What makes you say they are backwards? They look normal to me.
the other threads and pics i have seen have the forge inscribed screw on tops facing each other not facing the up.
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      12-05-2009, 07:43 PM   #7
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Quote:
Originally Posted by Cyruz View Post
the other threads and pics i have seen have the forge inscribed screw on tops facing each other not facing the up.
Yes, this would be the right way to install.
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      12-06-2009, 08:05 AM   #8
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This is how mine was shipped from Stett, with DV's installed. Mine have vacuum connection on end instead of side, but looks like yours.
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      12-06-2009, 09:21 AM   #9
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OP: your DVs are fine....

happy4nk8er: It looks like you are using a different type of DVs than the ones that Forge propose for 335i.
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      12-06-2009, 09:54 AM   #10
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Quote:
Originally Posted by e.n335 View Post
Yes, this would be the right way to install.
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      12-07-2009, 10:34 AM   #11
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Quote:
Originally Posted by Panoz View Post
OP: your DVs are fine....

happy4nk8er: It looks like you are using a different type of DVs than the ones that Forge propose for 335i.
Not sure, this is what Stett provided on their Charge pipe with DV's, I think they have quite a few of then out. Have not installed mine yet waiting on the meth kit.
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      12-07-2009, 04:58 PM   #12
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crap so now there are conflicting comments. damn
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      04-03-2010, 11:57 PM   #13
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Quote:
Originally Posted by happy4nk8er View Post
This is how mine was shipped from Stett, with DV's installed. Mine have vacuum connection on end instead of side, but looks like yours.
So is this the right way to install these or is this wrong??
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      04-04-2010, 12:48 AM   #14
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The difference between them might be that there are two kinds of forge DVs, ones that are made for the charge pipe, and ones that are meant to just replace the stock DVs. That could be the answer? I'm not sure I don't have either :P
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      04-04-2010, 12:55 AM   #15
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Quote:
Originally Posted by shochu75 View Post
The difference between them might be that there are two kinds of forge DVs, ones that are made for the charge pipe, and ones that are meant to just replace the stock DVs. That could be the answer? I'm not sure I don't have either :P

That is correct, the DV that are made for the 335 have the nipples coming out of the side...

The "universal" DV is the one that has the nipple on the top.
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      04-04-2010, 01:38 AM   #16
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Quote:
Originally Posted by SfValley335i View Post
That is correct, the DV that are made for the 335 have the nipples coming out of the side...

The "universal" DV is the one that has the nipple on the top.
thats what i thought but i was peaking inside them both and they both are pretty much the same except for the fitting that connects to our stock charge pipe. with that in mind, if we were to connect our 335 dvs backwards, would it work provided the fittings sealed? more on the mechanics of the dv itself

btw, i'm talking about post #8
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      04-04-2010, 02:40 AM   #17
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they will work either way in reallity. The Froge ones that are designed to fit the connectors on the N54 Charge pipe fit the opposite way to most standard installations. Any standard DV being fitted using hose adaptors can be fited the "normal" was as the OP has done. Some other cars have them fit like the N54 Forge ones too due to space restrictions.
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      04-04-2010, 09:43 AM   #18
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Looks like it's installed correctly from the first picture.
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      04-04-2010, 10:01 AM   #19
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Quote:
Originally Posted by happy4nk8er View Post
This is how mine was shipped from Stett, with DV's installed. Mine have vacuum connection on end instead of side, but looks like yours.
For this version of DV's that is the correct setup. I have the same set on my car.
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      04-04-2010, 11:26 AM   #20
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Quote:
Originally Posted by Cyruz View Post
so i was just wasting time as usual and came across a post that has the DV's put the opposite way as i do on the car. I have had them on for about 6 weeks now and havent noticed any problems or CEL/SES issues. assuming i do have them in backward, did i do any harm to the car? im gonna go take a picture now and throw it up. oh and they are on a steet pipe.
You have the old version Forge DVs which is installed wrong..The caps suppose to face each other...The newer versions are suppose to be installed the way you have them now!
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      04-04-2010, 11:33 AM   #21
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*** Edit - Just noticed you said you have the stett pipe, so the below may not apply.

Yeah - here is a picture of how the old N54 version should look (you have the old version). Below that, there is the new version for the N54. On the new one the vacuum port is fixed and not adjustable. On the old one you could adjust them as talked about on page 4, iin the Forge install instruction pdf on their site: http://www.forgemotorsport.com/media/FMDVN54.pdf
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      04-05-2010, 02:30 PM   #22
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So to get a solid answer, i emailed Forge directly. The picture attached was post 1 and post 8 of this thread. Here is their answer:

Rick, those valve, and most valves for that matter, will work in either orientation.

Patrick Robles
Forge Motorsport
T- 407.447.5363
F- 407.447.5361
www.forgemotorsport.com

From: ***** *****
Sent: Sunday, April 04, 2010 1:19 AM
To: service@forgemotorsport.com
Subject: question on forge dv's

I had bought a stett charge pipe that came with your forge dv’s. Previously I had bought your forge dv’s for an E90 bmw 335i that was a factory replacement. The question I have is are my current ones installed properly? I’ve attached a picture of the charge pipe and the dv’s installed. It looks like the piston is facing the wrong way but I’d like to get your input.

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