Forge DVS leaking - any fix for this?

ajsalida · 07-16-2014, 06:55 AM

cont...see how on yours the faces/tops of the DV's are pointing up? They need to be pointing towards each other. The flange on each DV, notice one has a slot machined in it and the other doesn't? That is because one side only should see high boost and the other not. You have the high boost side connected to the open intake, not the CP where it belongs. That slot is so the hose clamp can cinch down tight on boosted flow.

lfelunden · 07-16-2014, 08:20 AM

Quote:

Originally Posted by ajsalida

cont...see how on yours the faces/tops of the DV's are pointing up? They need to be pointing towards each other. The flange on each DV, notice one has a slot machined in it and the other doesn't? That is because one side only should see high boost and the other not. You have the high boost side connected to the open intake, not the CP where it belongs. That slot is so the hose clamp can cinch down tight on boosted flow.

HOLY SHIT I'M FEELING STUPID AS FUCK! Thanks a lot man! Holy shit.. Been frustrated, BMW installed them as they are now -.- .. I'll go down now and make it happen!

ajsalida · 07-16-2014, 08:42 AM

Quote:

Originally Posted by lfelunden

HOLY SHIT I'M FEELING STUPID AS FUCK! Thanks a lot man! Holy shit.. Been frustrated, BMW installed them as they are now -.- .. I'll go down now and make it happen!

Don't worry about it. Keep in mind you may need to move the back DV to the front and the front to the back in your situation to get it all to line up right like the pic. The DV's are not identical.

lfelunden · 07-16-2014, 09:05 AM

Quote:

Originally Posted by ajsalida

Quote:

Originally Posted by lfelunden

HOLY SHIT I'M FEELING STUPID AS FUCK! Thanks a lot man! Holy shit.. Been frustrated, BMW installed them as they are now -.- .. I'll go down now and make it happen!

Don't worry about it. Keep in mind you may need to move the back DV to the front and the front to the back in your situation to get it all to line up right like the pic. The DV's are not identical.

Yes I totally understood! I will do that now

lfelunden · 07-16-2014, 09:40 AM

So finally!

whosdady · 07-16-2014, 09:56 AM

Quote:

Originally Posted by lfelunden

So finally!

Did you notice a difference when driving?

OB · 07-16-2014, 11:24 AM

Quote:

Originally Posted by lfelunden

So finally!

yeah buddy

ajsalida · 07-16-2014, 11:30 AM

Nice! Now go make a big carbon footprint.

lfelunden · 07-16-2014, 12:20 PM

So I just went on the highway, antispin flashed in 3rd gear.. I think the JB4 is stopping me now. I have a flash that is boosting 19+ psi but the JB4 puts me into map 4..

lfelunden · 07-16-2014, 01:47 PM

Quote:

Originally Posted by ajsalida

Nice! Now go make a big carbon footprint.

Man thanks a lot! Saved me hours of frustrations. I'm having forge sending me 2 service kits, new silicon hoses and blue springs. I think the blue springs are too much though.

Jklad · 07-16-2014, 02:52 PM

Quote:

Originally Posted by lfelunden

So?

This pic is incorrect orientation. Tune them so the logos are each facing each other, back to back - look at the pic In mikes post

Edit: sorry, guess I was late to the party....

How do you like the er cp? I'm thinking of getting same one to replace my current stock cp with forge dv's.

ajsalida · 07-16-2014, 03:13 PM

Quote:

Originally Posted by lfelunden

Man thanks a lot! Saved me hours of frustrations. I'm having forge sending me 2 service kits, new silicon hoses and blue springs. I think the blue springs are too much though.

No problem. About the springs, they serve a different function on a diverter valve than on a blow off valve. On a diverter you are just tuning the rate and level that it opens WRT the internal intake manifold vacuum that you want them to open at, has little/nothing to do with boost levels.

Most things I read on N54 indicate yellow is enough with no shim. IOW just because you run higher boost you do not need stiffer DV springs, unrelated.

I would actually advise you to leave the DV's alone for a while if they seem to be working properly, and focus on tuning and getting everything else working right. You may not need to rebuild them at all, and if it were my car I would not touch them unless there were specific signs they were malfunctioning (assuming installed correctly).

lfelunden · 07-17-2014, 05:18 AM

Quote:

Originally Posted by ajsalida

Quote:

Originally Posted by lfelunden

Man thanks a lot! Saved me hours of frustrations. I'm having forge sending me 2 service kits, new silicon hoses and blue springs. I think the blue springs are too much though.

No problem. About the springs, they serve a different function on a diverter valve than on a blow off valve. On a diverter you are just tuning the rate and level that it opens WRT the internal intake manifold vacuum that you want them to open at, has little/nothing to do with boost levels.

Most things I read on N54 indicate yellow is enough with no shim. IOW just because you run higher boost you do not need stiffer DV springs, unrelated.

I would actually advise you to leave the DV's alone for a while if they seem to be working properly, and focus on tuning and getting everything else working right. You may not need to rebuild them at all, and if it were my car I would not touch them unless there were specific signs they were malfunctioning (assuming installed correctly).

I am tuning it as we speak

Thanks again!

335i-boy · 07-17-2014, 11:03 AM

Just read the entire thread. Was interested as I had installed my Forge DV's "upside down" when I first put them in.

It's great to see the members in this thread stick with the OP until he got it sorted out

. Reminds of the e90post of old..

Ilma · 07-17-2014, 12:02 PM

Quote:

Originally Posted by 335i-boy

. Reminds of the e90post of old..

Yes the old days of Shiv, Scalbert and the infamous LawDude.

07-16-2014, 06:55 AM	#45
ajsalida Colonel 229 Rep 2,387 Posts Drives: 95 M3, 02 R1150GSA, 09 335xi Join Date: Aug 2010 Location: SW USA iTrader: (2)	cont...see how on yours the faces/tops of the DV's are pointing up? They need to be pointing towards each other. The flange on each DV, notice one has a slot machined in it and the other doesn't? That is because one side only should see high boost and the other not. You have the high boost side connected to the open intake, not the CP where it belongs. That slot is so the hose clamp can cinch down tight on boosted flow.
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07-16-2014, 09:40 AM	#49
lfelunden Banned 61 Rep 643 Posts Drives: BMW M5 F10 Join Date: Aug 2011 Location: German Autobahn iTrader: (0) Garage List 2013 BMW M5 [0.00] 2011 Alpina B3S Bit ... [9.50] 2010 Alpina B3 Biturbo [10.00] 2009 Alpina B5S [10.00]	So finally! Attached Images
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07-16-2014, 11:30 AM	#52
ajsalida Colonel 229 Rep 2,387 Posts Drives: 95 M3, 02 R1150GSA, 09 335xi Join Date: Aug 2010 Location: SW USA iTrader: (2)	Nice! Now go make a big carbon footprint.
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07-16-2014, 12:20 PM	#53
lfelunden Banned 61 Rep 643 Posts Drives: BMW M5 F10 Join Date: Aug 2011 Location: German Autobahn iTrader: (0) Garage List 2013 BMW M5 [0.00] 2011 Alpina B3S Bit ... [9.50] 2010 Alpina B3 Biturbo [10.00] 2009 Alpina B5S [10.00]	So I just went on the highway, antispin flashed in 3rd gear.. I think the JB4 is stopping me now. I have a flash that is boosting 19+ psi but the JB4 puts me into map 4..
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07-17-2014, 11:03 AM	#58
335i-boy Lieutenant 15 Rep 457 Posts Drives: E92 335i M-Sport Join Date: Jun 2010 Location: Australia iTrader: (0)	Just read the entire thread. Was interested as I had installed my Forge DV's "upside down" when I first put them in. It's great to see the members in this thread stick with the OP until he got it sorted out . Reminds of the e90post of old.. __________________ 2008 E92 335i M-Sport \| Sapphire Black \| Sunroof \| Creme Beige \| Poplar Grey \| Logic 7 \| 6AT \| 19" AG M359's \| Michelin PS4S \| LUX V3 \| MHD V5 E40 \| Steve AZ Walbro inline \| Vishnu DCI \| BMS CP \| AR Design Catless DP's \| Forge DV's \| Helix IC \| (Stock Cat. back) \|
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